72990652 has 12 divisors (see below), whose sum is σ = 145981360. Its totient is φ = 31281696.

The previous prime is 72990649. The next prime is 72990679. The reversal of 72990652 is 25609927.

It is a happy number.

72990652 is an admirable number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1303377 + ... + 1303432.

Almost surely, 2^72990652 is an apocalyptic number.

It is an amenable number.

72990652 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

72990652 is a wasteful number, since it uses less digits than its factorization.

72990652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2606820 (or 2606818 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 72990652 is about 8543.4566774813. The cubic root of 72990652 is about 417.9160793959.

The spelling of 72990652 in words is "seventy-two million, nine hundred ninety thousand, six hundred fifty-two".