238157136 has 120 divisors (see below), whose sum is σ = 766331904. Its totient is φ = 67633920.

The previous prime is 238157119. The next prime is 238157137. The reversal of 238157136 is 631751832.

238157136 is a `hidden beast` number, since 2 + 3 + 81 + 571 + 3 + 6 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (30240) is a multiple of the sum of its prime divisors (1440).

It is a self number, because there is not a number n which added to its sum of digits gives 238157136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238157137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 191910 + ... + 193146.

Almost surely, 2^238157136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238157136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383165952).

238157136 is an abundant number, since it is smaller than the sum of its proper divisors (528174768).

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

238157136 is a wasteful number, since it uses less digits than its factorization.

238157136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449 (or 1440 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 238157136 is about 15432.3405872214. The cubic root of 238157136 is about 619.8517994722.

The spelling of 238157136 in words is "two hundred thirty-eight million, one hundred fifty-seven thousand, one hundred thirty-six".