157831924 has 12 divisors (see below), whose sum is σ = 277282404. Its totient is φ = 78608384.

The previous prime is 157831871. The next prime is 157831931. The reversal of 157831924 is 429138751.

It can be written as a sum of positive squares in 2 ways, for example, as 115347600 + 42484324 = 10740^2 + 6518^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75739 + ... + 77794.

It is an arithmetic number, because the mean of its divisors is an integer number (23106867).

Almost surely, 2^157831924 is an apocalyptic number.

It is an amenable number.

157831924 is a deficient number, since it is larger than the sum of its proper divisors (119450480).

157831924 is a wasteful number, since it uses less digits than its factorization.

157831924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153794 (or 153792 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 157831924 is about 12563.1176067089. The cubic root of 157831924 is about 540.4202535581.

The spelling of 157831924 in words is "one hundred fifty-seven million, eight hundred thirty-one thousand, nine hundred twenty-four".