72636072 has 16 divisors (see below), whose sum is σ = 181590240. Its totient is φ = 24212016.

The previous prime is 72636071. The next prime is 72636079. The reversal of 72636072 is 27063627.

It is not an unprimeable number, because it can be changed into a prime (72636071) 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 3 ways as a sum of consecutive naturals, for example, 1513228 + ... + 1513275.

It is an arithmetic number, because the mean of its divisors is an integer number (11349390).

Almost surely, 2^72636072 is an apocalyptic number.

It is an amenable number.

72636072 is an abundant number, since it is smaller than the sum of its proper divisors (108954168).

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

72636072 is a wasteful number, since it uses less digits than its factorization.

72636072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3026512 (or 3026508 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 72636072 is about 8522.6798602318. The cubic root of 72636072 is about 417.2382515569.

Adding to 72636072 its reverse (27063627), we get a palindrome (99699699).

The spelling of 72636072 in words is "seventy-two million, six hundred thirty-six thousand, seventy-two".