64287838 has 32 divisors (see below), whose sum is σ = 103356000. Its totient is φ = 29936256.

The previous prime is 64287823. The next prime is 64287851. The reversal of 64287838 is 83878246.

It is a super-2 number, since 2×64287838² = 8265852229428488, 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 15 ways as a sum of consecutive naturals, for example, 371520 + ... + 371692.

It is an arithmetic number, because the mean of its divisors is an integer number (3229875).

Almost surely, 2^64287838 is an apocalyptic number.

64287838 is a deficient number, since it is larger than the sum of its proper divisors (39068162).

64287838 is a wasteful number, since it uses less digits than its factorization.

64287838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396.

The product of its digits is 516096, while the sum is 46.

The square root of 64287838 is about 8017.9696931330. The cubic root of 64287838 is about 400.5987657517.

The spelling of 64287838 in words is "sixty-four million, two hundred eighty-seven thousand, eight hundred thirty-eight".