72651612 has 48 divisors (see below), whose sum is σ = 191318400. Its totient is φ = 21255360.

The previous prime is 72651563. The next prime is 72651617. The reversal of 72651612 is 21615627.

It is a self number, because there is not a number n which added to its sum of digits gives 72651612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72651617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5662 + ... + 13317.

It is an arithmetic number, because the mean of its divisors is an integer number (3985800).

Almost surely, 2^72651612 is an apocalyptic number.

It is an amenable number.

72651612 is an abundant number, since it is smaller than the sum of its proper divisors (118666788).

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

72651612 is a wasteful number, since it uses less digits than its factorization.

72651612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19026 (or 19024 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 72651612 is about 8523.5914965465. The cubic root of 72651612 is about 417.2680045429.

The spelling of 72651612 in words is "seventy-two million, six hundred fifty-one thousand, six hundred twelve".