64039238 has 16 divisors (see below), whose sum is σ = 102857040. Its totient is φ = 29796096.

The previous prime is 64039207. The next prime is 64039259. The reversal of 64039238 is 83293046.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 64039198 and 64039207.

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, 7556 + ... + 13607.

It is an arithmetic number, because the mean of its divisors is an integer number (6428565).

Almost surely, 2^64039238 is an apocalyptic number.

64039238 is a deficient number, since it is larger than the sum of its proper divisors (38817802).

64039238 is a wasteful number, since it uses less digits than its factorization.

64039238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21271.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 64039238 is about 8002.4519992312. The cubic root of 64039238 is about 400.0817291331.

The spelling of 64039238 in words is "sixty-four million, thirty-nine thousand, two hundred thirty-eight".