72371715 has 24 divisors (see below), whose sum is σ = 125391600. Its totient is φ = 35627904.

The previous prime is 72371711. The next prime is 72371743. The reversal of 72371715 is 51717327.

It is not a de Polignac number, because 72371715 - 2² = 72371711 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72371711) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11740 + ... + 16809.

It is an arithmetic number, because the mean of its divisors is an integer number (5224650).

Almost surely, 2^72371715 is an apocalyptic number.

72371715 is a deficient number, since it is larger than the sum of its proper divisors (53019885).

72371715 is a wasteful number, since it uses less digits than its factorization.

72371715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28583 (or 28570 counting only the distinct ones).

The product of its digits is 10290, while the sum is 33.

The square root of 72371715 is about 8507.1566930438. The cubic root of 72371715 is about 416.7314605015.

The spelling of 72371715 in words is "seventy-two million, three hundred seventy-one thousand, seven hundred fifteen".