72507902 has 4 divisors (see below), whose sum is σ = 108761856. Its totient is φ = 36253950.

The previous prime is 72507899. The next prime is 72507913. The reversal of 72507902 is 20970527.

It is a semiprime because it is the product of two primes.

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, 18126974 + ... + 18126977.

It is an arithmetic number, because the mean of its divisors is an integer number (27190464).

Almost surely, 2^72507902 is an apocalyptic number.

72507902 is a deficient number, since it is larger than the sum of its proper divisors (36253954).

72507902 is a wasteful number, since it uses less digits than its factorization.

72507902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36253953.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 72507902 is about 8515.1571917376. The cubic root of 72507902 is about 416.9926944454.

The spelling of 72507902 in words is "seventy-two million, five hundred seven thousand, nine hundred two".