72367636 has 12 divisors (see below), whose sum is σ = 138156480. Its totient is φ = 32894360.

The previous prime is 72367621. The next prime is 72367643. The reversal of 72367636 is 63676327.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 822316 + ... + 822403.

It is an arithmetic number, because the mean of its divisors is an integer number (11513040).

Almost surely, 2^72367636 is an apocalyptic number.

It is an amenable number.

72367636 is a deficient number, since it is larger than the sum of its proper divisors (65788844).

72367636 is a wasteful number, since it uses less digits than its factorization.

72367636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644734 (or 1644732 counting only the distinct ones).

The product of its digits is 190512, while the sum is 40.

The square root of 72367636 is about 8506.9169503411. The cubic root of 72367636 is about 416.7236311095.

The spelling of 72367636 in words is "seventy-two million, three hundred sixty-seven thousand, six hundred thirty-six".