232864138 has 16 divisors (see below), whose sum is σ = 377515656. Its totient is φ = 107089920.

The previous prime is 232864129. The next prime is 232864141. The reversal of 232864138 is 831468232.

232864138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 148279329 + 84584809 = 12177^2 + 9197^2 .

It is a junction number, because it is equal to n+sod(n) for n = 232864097 and 232864106.

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, 8631 + ... + 23242.

Almost surely, 2^232864138 is an apocalyptic number.

232864138 is a deficient number, since it is larger than the sum of its proper divisors (144651518).

232864138 is a wasteful number, since it uses less digits than its factorization.

232864138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32169.

The product of its digits is 55296, while the sum is 37.

The square root of 232864138 is about 15259.8865657645. The cubic root of 232864138 is about 615.2253238296.

It can be divided in two parts, 2328 and 64138, that added together give a palindrome (66466).

The spelling of 232864138 in words is "two hundred thirty-two million, eight hundred sixty-four thousand, one hundred thirty-eight".