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157081374 = 23215157793
BaseRepresentation
bin10010101110011…
…01111100011110
3101221120120010200
421113031330132
5310203100444
623330444330
73615112122
oct1127157436
9357516120
10157081374
118073961a
12447336a6
132670b178
1416c0d582
15dbcc969
hex95cdf1e

157081374 has 24 divisors (see below), whose sum is σ = 342602832. Its totient is φ = 52012800.

The previous prime is 157081357. The next prime is 157081399. The reversal of 157081374 is 473180751.

157081374 is a `hidden beast` number, since 1 + 570 + 8 + 13 + 74 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26179 + ... + 31614.

It is an arithmetic number, because the mean of its divisors is an integer number (14275118).

Almost surely, 2157081374 is an apocalyptic number.

157081374 is an abundant number, since it is smaller than the sum of its proper divisors (185521458).

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

157081374 is a wasteful number, since it uses less digits than its factorization.

157081374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57952 (or 57949 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 157081374 is about 12533.2108416000. The cubic root of 157081374 is about 539.5622584170.

It can be divided in two parts, 1570 and 81374, that added together give a square (82944 = 2882).

The spelling of 157081374 in words is "one hundred fifty-seven million, eighty-one thousand, three hundred seventy-four".

Divisors: 1 2 3 6 9 18 151 302 453 906 1359 2718 57793 115586 173379 346758 520137 1040274 8726743 17453486 26180229 52360458 78540687 157081374