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146778912 = 2533723467
BaseRepresentation
bin10001011111110…
…10101100100000
3101020012010211000
420233322230200
5300033411122
622321552000
73431412600
oct1057725440
9336163730
10146778912
1175942195
12411a5600
1324541a37
14156cac00
15cd450ac
hex8bfab20

146778912 has 144 divisors (see below), whose sum is σ = 498143520. Its totient is φ = 41924736.

The previous prime is 146778911. The next prime is 146778913. The reversal of 146778912 is 219877641.

It is a happy number.

146778912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (146778911) and next prime (146778913).

It is a tau number, because it is divible by the number of its divisors (144).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (146778911) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40603 + ... + 44069.

It is an arithmetic number, because the mean of its divisors is an integer number (3459330).

Almost surely, 2146778912 is an apocalyptic number.

146778912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 146778912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249071760).

146778912 is an abundant number, since it is smaller than the sum of its proper divisors (351364608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

146778912 is a wasteful number, since it uses less digits than its factorization.

146778912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3500 (or 3479 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 146778912 is about 12115.2347067649. The cubic root of 146778912 is about 527.4984907454.

The spelling of 146778912 in words is "one hundred forty-six million, seven hundred seventy-eight thousand, nine hundred twelve".

Divisors: 1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 32 36 42 48 49 54 56 63 72 84 96 98 108 112 126 144 147 168 189 196 216 224 252 288 294 336 378 392 432 441 504 588 672 756 784 864 882 1008 1176 1323 1512 1568 1764 2016 2352 2646 3024 3467 3528 4704 5292 6048 6934 7056 10401 10584 13868 14112 20802 21168 24269 27736 31203 41604 42336 48538 55472 62406 72807 83208 93609 97076 110944 124812 145614 166416 169883 187218 194152 218421 249624 291228 332832 339766 374436 388304 436842 499248 509649 582456 655263 679532 748872 776608 873684 998496 1019298 1164912 1310526 1359064 1497744 1528947 1747368 2038596 2329824 2621052 2718128 2995488 3057894 3494736 4077192 4586841 5242104 5436256 6115788 6989472 8154384 9173682 10484208 12231576 16308768 18347364 20968416 24463152 36694728 48926304 73389456 146778912