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157618136 = 23133148889
BaseRepresentation
bin10010110010100…
…00111111011000
3101222120211102202
421121100333120
5310322240021
623350145332
73622506044
oct1131207730
9358524382
10157618136
1180a75925
1244952248
1326868590
1416d0d024
15dc86a0b
hex9650fd8

157618136 has 32 divisors (see below), whose sum is σ = 328540800. Its totient is φ = 70398720.

The previous prime is 157618133. The next prime is 157618147. The reversal of 157618136 is 631816751.

157618136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1576181362 = 49686953592228992, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 157618136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157618133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21221 + ... + 27668.

It is an arithmetic number, because the mean of its divisors is an integer number (10266900).

Almost surely, 2157618136 is an apocalyptic number.

It is an amenable number.

157618136 is an abundant number, since it is smaller than the sum of its proper divisors (170922664).

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

157618136 is a wasteful number, since it uses less digits than its factorization.

157618136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48939 (or 48935 counting only the distinct ones).

The product of its digits is 30240, while the sum is 38.

The square root of 157618136 is about 12554.6061666625. The cubic root of 157618136 is about 540.1761382425.

The spelling of 157618136 in words is "one hundred fifty-seven million, six hundred eighteen thousand, one hundred thirty-six".

Divisors: 1 2 4 8 13 26 31 52 62 104 124 248 403 806 1612 3224 48889 97778 195556 391112 635557 1271114 1515559 2542228 3031118 5084456 6062236 12124472 19702267 39404534 78809068 157618136