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1968325216 = 2511131922639
BaseRepresentation
bin111010101010010…
…0100001001100000
312002011202021120221
41311110210021200
513012342401331
6523152012424
766530326324
oct16524441140
95064667527
101968325216
11920082960
1246b231114
13254a36ca0
141495b1984
15b7c07711
hex75524260

1968325216 has 96 divisors (see below), whose sum is σ = 4792435200. Its totient is φ = 782369280.

The previous prime is 1968325193. The next prime is 1968325217. The reversal of 1968325216 is 6125238691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968325217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75625 + ... + 98263.

It is an arithmetic number, because the mean of its divisors is an integer number (49921200).

Almost surely, 21968325216 is an apocalyptic number.

1968325216 is a gapful number since it is divisible by the number (16) 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 1968325216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2396217600).

1968325216 is an abundant number, since it is smaller than the sum of its proper divisors (2824109984).

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

1968325216 is a wasteful number, since it uses less digits than its factorization.

1968325216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22692 (or 22684 counting only the distinct ones).

The product of its digits is 155520, while the sum is 43.

The square root of 1968325216 is about 44365.8113416175. The cubic root of 1968325216 is about 1253.2343367812.

It can be divided in two parts, 1968 and 325216, that added together give a square (327184 = 5722).

The spelling of 1968325216 in words is "one billion, nine hundred sixty-eight million, three hundred twenty-five thousand, two hundred sixteen".

Divisors: 1 2 4 8 11 13 16 19 22 26 32 38 44 52 76 88 104 143 152 176 208 209 247 286 304 352 416 418 494 572 608 836 988 1144 1672 1976 2288 2717 3344 3952 4576 5434 6688 7904 10868 21736 22639 43472 45278 86944 90556 181112 249029 294307 362224 430141 498058 588614 724448 860282 996116 1177228 1720564 1992232 2354456 3237377 3441128 3984464 4708912 4731551 5591833 6474754 6882256 7968928 9417824 9463102 11183666 12949508 13764512 18926204 22367332 25899016 37852408 44734664 51798032 61510163 75704816 89469328 103596064 123020326 151409632 178938656 246040652 492081304 984162608 1968325216