72990486 has 24 divisors (see below), whose sum is σ = 167449464. Its totient is φ = 22898880.

The previous prime is 72990451. The next prime is 72990509. The reversal of 72990486 is 68409927.

It is a happy number.

It is a super-2 number, since 2×72990486² = 10655222093032392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118960 + ... + 119571.

It is an arithmetic number, because the mean of its divisors is an integer number (6977061).

Almost surely, 2^72990486 is an apocalyptic number.

72990486 is an abundant number, since it is smaller than the sum of its proper divisors (94458978).

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

72990486 is a wasteful number, since it uses less digits than its factorization.

72990486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238556 (or 238553 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 72990486 is about 8543.4469624385. The cubic root of 72990486 is about 417.9157625785.

The spelling of 72990486 in words is "seventy-two million, nine hundred ninety thousand, four hundred eighty-six".