64138294 has 16 divisors (see below), whose sum is σ = 105397776. Its totient is φ = 29030400.

The previous prime is 64138289. The next prime is 64138301. The reversal of 64138294 is 49283146.

It is a super-2 number, since 2×64138294² = 8227441514460872, which contains 22 as substring.

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, 747 + ... + 11350.

It is an arithmetic number, because the mean of its divisors is an integer number (6587361).

Almost surely, 2^64138294 is an apocalyptic number.

64138294 is a deficient number, since it is larger than the sum of its proper divisors (41259482).

64138294 is a wasteful number, since it uses less digits than its factorization.

64138294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12351.

The product of its digits is 41472, while the sum is 37.

The square root of 64138294 is about 8008.6387107922. The cubic root of 64138294 is about 400.2879052267.

The spelling of 64138294 in words is "sixty-four million, one hundred thirty-eight thousand, two hundred ninety-four".