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253211712 = 26313229443
BaseRepresentation
bin11110001011110…
…11010001000000
3122122110111011120
433011323101000
51004310233322
641043112240
76163156365
oct1705732100
9578414146
10253211712
1111aa27786
1270972680
13405c8520
14258b446c
151736aa5c
hexf17b440

253211712 has 112 divisors (see below), whose sum is σ = 726277440. Its totient is φ = 77395968.

The previous prime is 253211677. The next prime is 253211743. The reversal of 253211712 is 217112352.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 571363 + ... + 571805.

It is an arithmetic number, because the mean of its divisors is an integer number (6484620).

Almost surely, 2253211712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253211712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (363138720).

253211712 is an abundant number, since it is smaller than the sum of its proper divisors (473065728).

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

253211712 is a wasteful number, since it uses less digits than its factorization.

253211712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700 (or 690 counting only the distinct ones).

The product of its digits is 840, while the sum is 24.

The square root of 253211712 is about 15912.6274386099. The cubic root of 253211712 is about 632.6467235527.

The spelling of 253211712 in words is "two hundred fifty-three million, two hundred eleven thousand, seven hundred twelve".

Divisors: 1 2 3 4 6 8 12 13 16 24 26 32 39 48 52 64 78 96 104 156 192 208 229 312 416 443 458 624 687 832 886 916 1248 1329 1374 1772 1832 2496 2658 2748 2977 3544 3664 5316 5496 5759 5954 7088 7328 8931 10632 10992 11518 11908 14176 14656 17277 17862 21264 21984 23036 23816 28352 34554 35724 42528 43968 46072 47632 69108 71448 85056 92144 95264 101447 138216 142896 184288 190528 202894 276432 285792 304341 368576 405788 552864 571584 608682 811576 1105728 1217364 1318811 1623152 2434728 2637622 3246304 3956433 4869456 5275244 6492608 7912866 9738912 10550488 15825732 19477824 21100976 31651464 42201952 63302928 84403904 126605856 253211712