72298215 has 24 divisors (see below), whose sum is σ = 136710288. Its totient is φ = 35053440.

The previous prime is 72298199. The next prime is 72298241. The reversal of 72298215 is 51289227.

It is not a de Polignac number, because 72298215 - 2⁴ = 72298199 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 72298215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72534 + ... + 73523.

It is an arithmetic number, because the mean of its divisors is an integer number (5696262).

Almost surely, 2^72298215 is an apocalyptic number.

72298215 is a deficient number, since it is larger than the sum of its proper divisors (64412073).

72298215 is a wasteful number, since it uses less digits than its factorization.

72298215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146079 (or 146076 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 72298215 is about 8502.8357034580. The cubic root of 72298215 is about 416.5903365956.

The spelling of 72298215 in words is "seventy-two million, two hundred ninety-eight thousand, two hundred fifteen".