44636868 has 18 divisors (see below), whose sum is σ = 112832174. Its totient is φ = 14878944.

The previous prime is 44636861. The next prime is 44636873. The reversal of 44636868 is 86863644.

44636868 is a `hidden beast` number, since 4 + 4 + 636 + 8 + 6 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 42614784 + 2022084 = 6528^2 + 1422^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (44636861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 619921 + ... + 619992.

Almost surely, 2^44636868 is an apocalyptic number.

It is an amenable number.

44636868 is an abundant number, since it is smaller than the sum of its proper divisors (68195306).

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

44636868 is a wasteful number, since it uses less digits than its factorization.

44636868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239923 (or 1239918 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The square root of 44636868 is about 6681.0828463656. The cubic root of 44636868 is about 354.7299884270.

The spelling of 44636868 in words is "forty-four million, six hundred thirty-six thousand, eight hundred sixty-eight".