64433488 has 40 divisors (see below), whose sum is σ = 148883328. Its totient is φ = 26412672.

The previous prime is 64433483. The next prime is 64433489. The reversal of 64433488 is 88433446.

It is a happy number.

It is a super-2 number, since 2×64433488² = 8303348751692288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64433488.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64433483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9931 + ... + 15082.

Almost surely, 2^64433488 is an apocalyptic number.

It is an amenable number.

64433488 is an abundant number, since it is smaller than the sum of its proper divisors (84449840).

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

64433488 is a wasteful number, since it uses less digits than its factorization.

64433488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25051 (or 25045 counting only the distinct ones).

The product of its digits is 221184, while the sum is 40.

The square root of 64433488 is about 8027.0472777977. The cubic root of 64433488 is about 400.9010686640.

The spelling of 64433488 in words is "sixty-four million, four hundred thirty-three thousand, four hundred eighty-eight".