64290288 has 20 divisors (see below), whose sum is σ = 166083368. Its totient is φ = 21430080.

The previous prime is 64290269. The next prime is 64290323. The reversal of 64290288 is 88209246.

It is a super-2 number, since 2×64290288² = 8266482262245888, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 669643 + ... + 669738.

Almost surely, 2^64290288 is an apocalyptic number.

It is an amenable number.

64290288 is an abundant number, since it is smaller than the sum of its proper divisors (101793080).

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

64290288 is a wasteful number, since it uses less digits than its factorization.

64290288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339392 (or 1339386 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 64290288 is about 8018.1224734971. The cubic root of 64290288 is about 400.6038546070.

The spelling of 64290288 in words is "sixty-four million, two hundred ninety thousand, two hundred eighty-eight".