64402356 has 24 divisors (see below), whose sum is σ = 152085024. Its totient is φ = 21208480.

The previous prime is 64402319. The next prime is 64402391. The reversal of 64402356 is 65320446.

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, 31335 + ... + 33326.

It is an arithmetic number, because the mean of its divisors is an integer number (6336876).

Almost surely, 2^64402356 is an apocalyptic number.

It is an amenable number.

64402356 is an abundant number, since it is smaller than the sum of its proper divisors (87682668).

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

64402356 is a wasteful number, since it uses less digits than its factorization.

64402356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64751 (or 64749 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 64402356 is about 8025.1078497426. The cubic root of 64402356 is about 400.8364911537.

The spelling of 64402356 in words is "sixty-four million, four hundred two thousand, three hundred fifty-six".