64288444 has 12 divisors (see below), whose sum is σ = 122732568. Its totient is φ = 29222000.

The previous prime is 64288439. The next prime is 64288453. The reversal of 64288444 is 44488246.

It is a super-2 number, since 2×64288444² = 8266008063882272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64288397 and 64288406.

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, 730507 + ... + 730594.

It is an arithmetic number, because the mean of its divisors is an integer number (10227714).

Almost surely, 2^64288444 is an apocalyptic number.

It is an amenable number.

64288444 is a deficient number, since it is larger than the sum of its proper divisors (58444124).

64288444 is a wasteful number, since it uses less digits than its factorization.

64288444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461116 (or 1461114 counting only the distinct ones).

The product of its digits is 196608, while the sum is 40.

The square root of 64288444 is about 8018.0074831594. The cubic root of 64288444 is about 400.6000244765.

The spelling of 64288444 in words is "sixty-four million, two hundred eighty-eight thousand, four hundred forty-four".