72507774 has 16 divisors (see below), whose sum is σ = 145099008. Its totient is φ = 24155352.

The previous prime is 72507769. The next prime is 72507811. The reversal of 72507774 is 47770527.

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, 18669 + ... + 22215.

It is an arithmetic number, because the mean of its divisors is an integer number (9068688).

Almost surely, 2^72507774 is an apocalyptic number.

72507774 is an abundant number, since it is smaller than the sum of its proper divisors (72591234).

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

72507774 is a wasteful number, since it uses less digits than its factorization.

72507774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6959.

The product of its (nonzero) digits is 96040, while the sum is 39.

The square root of 72507774 is about 8515.1496757250. The cubic root of 72507774 is about 416.9924490694.

The spelling of 72507774 in words is "seventy-two million, five hundred seven thousand, seven hundred seventy-four".