157907238 has 16 divisors (see below), whose sum is σ = 318942576. Its totient is φ = 52114400.

The previous prime is 157907221. The next prime is 157907257. The reversal of 157907238 is 832709751.

157907238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 157907238.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129681 + ... + 130892.

It is an arithmetic number, because the mean of its divisors is an integer number (19933911).

Almost surely, 2^157907238 is an apocalyptic number.

157907238 is an abundant number, since it is smaller than the sum of its proper divisors (161035338).

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

157907238 is a wasteful number, since it uses less digits than its factorization.

157907238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260679.

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 157907238 is about 12566.1146739953. The cubic root of 157907238 is about 540.5061988636.

The spelling of 157907238 in words is "one hundred fifty-seven million, nine hundred seven thousand, two hundred thirty-eight".