72608740 has 12 divisors (see below), whose sum is σ = 152478396. Its totient is φ = 29043488.

The previous prime is 72608737. The next prime is 72608813. The reversal of 72608740 is 4780627.

It can be written as a sum of positive squares in 2 ways, for example, as 49028004 + 23580736 = 7002^2 + 4856^2 .

It is a junction number, because it is equal to n+sod(n) for n = 72608696 and 72608705.

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, 1815199 + ... + 1815238.

It is an arithmetic number, because the mean of its divisors is an integer number (12706533).

Almost surely, 2^72608740 is an apocalyptic number.

It is an amenable number.

72608740 is an abundant number, since it is smaller than the sum of its proper divisors (79869656).

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

72608740 is a wasteful number, since it uses less digits than its factorization.

72608740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3630446 (or 3630444 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 72608740 is about 8521.0762231070. The cubic root of 72608740 is about 417.1859112332.

The spelling of 72608740 in words is "seventy-two million, six hundred eight thousand, seven hundred forty".