238521136 has 40 divisors (see below), whose sum is σ = 555956480. Its totient is φ = 96842304.

The previous prime is 238521131. The next prime is 238521181. The reversal of 238521136 is 631125832.

238521136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 238521098 and 238521107.

It is not an unprimeable number, because it can be changed into a prime (238521131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53916 + ... + 58171.

It is an arithmetic number, because the mean of its divisors is an integer number (13898912).

Almost surely, 2^238521136 is an apocalyptic number.

It is an amenable number.

238521136 is an abundant number, since it is smaller than the sum of its proper divisors (317435344).

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

238521136 is a wasteful number, since it uses less digits than its factorization.

238521136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112121 (or 112115 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 238521136 is about 15444.1294995866. The cubic root of 238521136 is about 620.1674331012.

Adding to 238521136 its reverse (631125832), we get a palindrome (869646968).

The spelling of 238521136 in words is "two hundred thirty-eight million, five hundred twenty-one thousand, one hundred thirty-six".