72536444 has 6 divisors (see below), whose sum is σ = 126938784. Its totient is φ = 36268220.

The previous prime is 72536423. The next prime is 72536447. The reversal of 72536444 is 44463527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72536447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9067052 + ... + 9067059.

It is an arithmetic number, because the mean of its divisors is an integer number (21156464).

Almost surely, 2^72536444 is an apocalyptic number.

It is an amenable number.

72536444 is a deficient number, since it is larger than the sum of its proper divisors (54402340).

72536444 is a wasteful number, since it uses less digits than its factorization.

72536444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18134115 (or 18134113 counting only the distinct ones).

The product of its digits is 80640, while the sum is 35.

The square root of 72536444 is about 8516.8329794590. The cubic root of 72536444 is about 417.0474022488.

The spelling of 72536444 in words is "seventy-two million, five hundred thirty-six thousand, four hundred forty-four".