49972864 has 16 divisors (see below), whose sum is σ = 99555570. Its totient is φ = 24986368.

The previous prime is 49972817. The next prime is 49972883. The reversal of 49972864 is 46827994.

It can be written as a sum of positive squares in only one way, i.e., 46131264 + 3841600 = 6792^2 + 1960^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 195079 + ... + 195334.

Almost surely, 2^49972864 is an apocalyptic number.

It is an amenable number.

49972864 is a deficient number, since it is larger than the sum of its proper divisors (49582706).

49972864 is an equidigital number, since it uses as much as digits as its factorization.

49972864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390427 (or 390415 counting only the distinct ones).

The product of its digits is 870912, while the sum is 49.

The square root of 49972864 is about 7069.1487464899. The cubic root of 49972864 is about 368.3364912178.

The spelling of 49972864 in words is "forty-nine million, nine hundred seventy-two thousand, eight hundred sixty-four".