157239380 has 12 divisors (see below), whose sum is σ = 330202740. Its totient is φ = 62895744.

The previous prime is 157239373. The next prime is 157239403. The reversal of 157239380 is 83932751.

It can be written as a sum of positive squares in 2 ways, for example, as 51437584 + 105801796 = 7172^2 + 10286^2 .

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, 3930965 + ... + 3931004.

It is an arithmetic number, because the mean of its divisors is an integer number (27516895).

Almost surely, 2^157239380 is an apocalyptic number.

157239380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157239380 is an abundant number, since it is smaller than the sum of its proper divisors (172963360).

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

157239380 is a wasteful number, since it uses less digits than its factorization.

157239380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7861978 (or 7861976 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 157239380 is about 12539.5127497044. The cubic root of 157239380 is about 539.7431105505.

The spelling of 157239380 in words is "one hundred fifty-seven million, two hundred thirty-nine thousand, three hundred eighty".