72280504 has 8 divisors (see below), whose sum is σ = 135525960. Its totient is φ = 36140248.

The previous prime is 72280493. The next prime is 72280517. The reversal of 72280504 is 40508227.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) 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 polite number, since it can be written as a sum of consecutive naturals, namely, 4517524 + ... + 4517539.

It is an arithmetic number, because the mean of its divisors is an integer number (16940745).

Almost surely, 2^72280504 is an apocalyptic number.

It is an amenable number.

72280504 is a deficient number, since it is larger than the sum of its proper divisors (63245456).

72280504 is a wasteful number, since it uses less digits than its factorization.

72280504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9035069 (or 9035065 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 72280504 is about 8501.7941635869. The cubic root of 72280504 is about 416.5563162350.

The spelling of 72280504 in words is "seventy-two million, two hundred eighty thousand, five hundred four".