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157144316 = 22727720261
BaseRepresentation
bin10010101110111…
…01010011111100
3101221200202110212
421113131103330
5310212104231
623332051552
73615463460
oct1127352374
9357622425
10157144316
118078193a
1244763bb8
1326730a04
1416c284a0
15dbe142b
hex95dd4fc

157144316 has 24 divisors (see below), whose sum is σ = 315438816. Its totient is φ = 67101120.

The previous prime is 157144313. The next prime is 157144321. The reversal of 157144316 is 613441751.

It is a super-2 number, since 2×1571443162 = 49388672102215712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157144313) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2375 + ... + 17886.

It is an arithmetic number, because the mean of its divisors is an integer number (13143284).

Almost surely, 2157144316 is an apocalyptic number.

It is an amenable number.

157144316 is an abundant number, since it is smaller than the sum of its proper divisors (158294500).

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

157144316 is a wasteful number, since it uses less digits than its factorization.

157144316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20549 (or 20547 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 157144316 is about 12535.7215986955. The cubic root of 157144316 is about 539.6343157458.

The spelling of 157144316 in words is "one hundred fifty-seven million, one hundred forty-four thousand, three hundred sixteen".

Divisors: 1 2 4 7 14 28 277 554 1108 1939 3878 7756 20261 40522 81044 141827 283654 567308 5612297 11224594 22449188 39286079 78572158 157144316