157039690 has 16 divisors (see below), whose sum is σ = 288686592. Its totient is φ = 61479184.

The previous prime is 157039657. The next prime is 157039703. The reversal of 157039690 is 96930751.

It is a super-2 number, since 2×157039690² = 49322928470592200, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 166594 + ... + 167533.

It is an arithmetic number, because the mean of its divisors is an integer number (18042912).

Almost surely, 2^157039690 is an apocalyptic number.

157039690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157039690 is a deficient number, since it is larger than the sum of its proper divisors (131646902).

157039690 is a wasteful number, since it uses less digits than its factorization.

157039690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334181.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 157039690 is about 12531.5477894792. The cubic root of 157039690 is about 539.5145270993.

The spelling of 157039690 in words is "one hundred fifty-seven million, thirty-nine thousand, six hundred ninety".