72265990 has 16 divisors (see below), whose sum is σ = 130232448. Its totient is φ = 28872256.

The previous prime is 72265951. The next prime is 72266003. The reversal of 72265990 is 9956227.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5739 + ... + 13321.

It is an arithmetic number, because the mean of its divisors is an integer number (8139528).

Almost surely, 2^72265990 is an apocalyptic number.

72265990 is a deficient number, since it is larger than the sum of its proper divisors (57966458).

72265990 is a wasteful number, since it uses less digits than its factorization.

72265990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8543.

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

The square root of 72265990 is about 8500.9405361995. The cubic root of 72265990 is about 416.5284327222.

The spelling of 72265990 in words is "seventy-two million, two hundred sixty-five thousand, nine hundred ninety".