157238408 has 8 divisors (see below), whose sum is σ = 294822030. Its totient is φ = 78619200.

The previous prime is 157238407. The next prime is 157238413. The reversal of 157238408 is 804832751.

It can be written as a sum of positive squares in only one way, i.e., 146361604 + 10876804 = 12098^2 + 3298^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (157238407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9827393 + ... + 9827408.

Almost surely, 2^157238408 is an apocalyptic number.

It is an amenable number.

157238408 is a deficient number, since it is larger than the sum of its proper divisors (137583622).

157238408 is a wasteful number, since it uses less digits than its factorization.

157238408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19654807 (or 19654803 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 157238408 is about 12539.4739921577. The cubic root of 157238408 is about 539.7419983792.

The spelling of 157238408 in words is "one hundred fifty-seven million, two hundred thirty-eight thousand, four hundred eight".