72347571 has 12 divisors (see below), whose sum is σ = 104575848. Its totient is φ = 48197664.

The previous prime is 72347567. The next prime is 72347579. The reversal of 72347571 is 17574327.

It is not a de Polignac number, because 72347571 - 2² = 72347567 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (72347579) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22936 + ... + 25898.

It is an arithmetic number, because the mean of its divisors is an integer number (8714654).

Almost surely, 2^72347571 is an apocalyptic number.

72347571 is a deficient number, since it is larger than the sum of its proper divisors (32228277).

72347571 is a wasteful number, since it uses less digits than its factorization.

72347571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5682 (or 5679 counting only the distinct ones).

The product of its digits is 41160, while the sum is 36.

The square root of 72347571 is about 8505.7375341589. The cubic root of 72347571 is about 416.6851132811.

The spelling of 72347571 in words is "seventy-two million, three hundred forty-seven thousand, five hundred seventy-one".