72038685 has 16 divisors (see below), whose sum is σ = 115367616. Its totient is φ = 38385408.

The previous prime is 72038683. The next prime is 72038689. The reversal of 72038685 is 58683027.

It is not a de Polignac number, because 72038685 - 2¹ = 72038683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72038683) 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 15 ways as a sum of consecutive naturals, for example, 28597 + ... + 31013.

It is an arithmetic number, because the mean of its divisors is an integer number (7210476).

Almost surely, 2^72038685 is an apocalyptic number.

It is an amenable number.

72038685 is a deficient number, since it is larger than the sum of its proper divisors (43328931).

72038685 is a wasteful number, since it uses less digits than its factorization.

72038685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4412.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 72038685 is about 8487.5606036128. The cubic root of 72038685 is about 416.0912587172.

The spelling of 72038685 in words is "seventy-two million, thirty-eight thousand, six hundred eighty-five".