72574928 has 40 divisors (see below), whose sum is σ = 143381448. Its totient is φ = 35581952.

The previous prime is 72574903. The next prime is 72574939. The reversal of 72574928 is 82947527.

It can be written as a sum of positive squares in 4 ways, for example, as 10291264 + 62283664 = 3208^2 + 7892^2 .

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 7 ways as a sum of consecutive naturals, for example, 247550 + ... + 247842.

Almost surely, 2^72574928 is an apocalyptic number.

It is an amenable number.

72574928 is a deficient number, since it is larger than the sum of its proper divisors (70806520).

72574928 is a wasteful number, since it uses less digits than its factorization.

72574928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551 (or 545 counting only the distinct ones).

The product of its digits is 282240, while the sum is 44.

The square root of 72574928 is about 8519.0919703921. The cubic root of 72574928 is about 417.1211436392.

The spelling of 72574928 in words is "seventy-two million, five hundred seventy-four thousand, nine hundred twenty-eight".