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157657914 = 236711523
BaseRepresentation
bin10010110010110…
…10101100111010
3101222122212000000
421121122230322
5310330023124
623351053430
73623033031
oct1131325472
9358585000
10157657914
1180aa27a7
1244971276
132688070b
1416d1d718
15dc936c9
hex965ab3a

157657914 has 56 divisors (see below), whose sum is σ = 359798112. Its totient is φ = 51778440.

The previous prime is 157657897. The next prime is 157657921. The reversal of 157657914 is 419756751.

157657914 is a `hidden beast` number, since 1 + 5 + 76 + 579 + 1 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 157657914.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 102757 + ... + 104279.

Almost surely, 2157657914 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157657914, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179899056).

157657914 is an abundant number, since it is smaller than the sum of its proper divisors (202140198).

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

157657914 is an equidigital number, since it uses as much as digits as its factorization.

157657914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614 (or 1599 counting only the distinct ones).

The product of its digits is 264600, while the sum is 45.

The square root of 157657914 is about 12556.1902661596. The cubic root of 157657914 is about 540.2215757361.

The spelling of 157657914 in words is "one hundred fifty-seven million, six hundred fifty-seven thousand, nine hundred fourteen".

Divisors: 1 2 3 6 9 18 27 54 71 81 142 162 213 243 426 486 639 729 1278 1458 1523 1917 3046 3834 4569 5751 9138 11502 13707 17253 27414 34506 41121 51759 82242 103518 108133 123363 216266 246726 324399 370089 648798 740178 973197 1110267 1946394 2220534 2919591 5839182 8758773 17517546 26276319 52552638 78828957 157657914