72392885 has 16 divisors (see below), whose sum is σ = 92807856. Its totient is φ = 54018048.

The previous prime is 72392863. The next prime is 72392893. The reversal of 72392885 is 58829327.

It can be written as a sum of positive squares in 8 ways, for example, as 5692996 + 66699889 = 2386^2 + 8167^2 .

It is a cyclic number.

It is not a de Polignac number, because 72392885 - 2⁶ = 72392821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5837 + ... + 13373.

It is an arithmetic number, because the mean of its divisors is an integer number (5800491).

Almost surely, 2^72392885 is an apocalyptic number.

It is an amenable number.

72392885 is a deficient number, since it is larger than the sum of its proper divisors (20414971).

72392885 is a wasteful number, since it uses less digits than its factorization.

72392885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7672.

The product of its digits is 241920, while the sum is 44.

The square root of 72392885 is about 8508.4008485731. The cubic root of 72392885 is about 416.7720903016.

The spelling of 72392885 in words is "seventy-two million, three hundred ninety-two thousand, eight hundred eighty-five".