72807474 has 16 divisors (see below), whose sum is σ = 145919808. Its totient is φ = 24218352.

The previous prime is 72807473. The next prime is 72807479. The reversal of 72807474 is 47470827.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72807473) by changing a digit.

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, 9537 + ... + 15380.

It is an arithmetic number, because the mean of its divisors is an integer number (9119988).

Almost surely, 2^72807474 is an apocalyptic number.

72807474 is an abundant number, since it is smaller than the sum of its proper divisors (73112334).

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

72807474 is a wasteful number, since it uses less digits than its factorization.

72807474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25409.

The product of its (nonzero) digits is 87808, while the sum is 39.

The square root of 72807474 is about 8532.7295749953. The cubic root of 72807474 is about 417.5661845426.

The spelling of 72807474 in words is "seventy-two million, eight hundred seven thousand, four hundred seventy-four".