72204015 has 64 divisors (see below), whose sum is σ = 137604096. Its totient is φ = 31967232.

The previous prime is 72204001. The next prime is 72204019. The reversal of 72204015 is 51040227.

It is not a de Polignac number, because 72204015 - 2⁶ = 72203951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72203982 and 72204000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72204019) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 75772 + ... + 76718.

It is an arithmetic number, because the mean of its divisors is an integer number (2150064).

Almost surely, 2^72204015 is an apocalyptic number.

72204015 is a deficient number, since it is larger than the sum of its proper divisors (65400081).

72204015 is a wasteful number, since it uses less digits than its factorization.

72204015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 72204015 is about 8497.2945694497. The cubic root of 72204015 is about 416.4093276744.

It can be divided in two parts, 7 and 2204015, that added together give a palindrome (2204022).

The spelling of 72204015 in words is "seventy-two million, two hundred four thousand, fifteen".