72545248 has 24 divisors (see below), whose sum is σ = 143101728. Its totient is φ = 36201984.

The previous prime is 72545227. The next prime is 72545261. The reversal of 72545248 is 84254527.

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17065 + ... + 20887.

It is an arithmetic number, because the mean of its divisors is an integer number (5962572).

Almost surely, 2^72545248 is an apocalyptic number.

It is an amenable number.

72545248 is a deficient number, since it is larger than the sum of its proper divisors (70556480).

72545248 is a wasteful number, since it uses less digits than its factorization.

72545248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4426 (or 4418 counting only the distinct ones).

The product of its digits is 89600, while the sum is 37.

The square root of 72545248 is about 8517.3498225681. The cubic root of 72545248 is about 417.0642743965.

The spelling of 72545248 in words is "seventy-two million, five hundred forty-five thousand, two hundred forty-eight".