71872392 has 32 divisors (see below), whose sum is σ = 181000800. Its totient is φ = 23781504.

The previous prime is 71872387. The next prime is 71872397. The reversal of 71872392 is 29327817.

It is an interprime number because it is at equal distance from previous prime (71872387) and next prime (71872397).

It is a self number, because there is not a number n which added to its sum of digits gives 71872392.

It is not an unprimeable number, because it can be changed into a prime (71872397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7642 + ... + 14217.

It is an arithmetic number, because the mean of its divisors is an integer number (5656275).

Almost surely, 2^71872392 is an apocalyptic number.

It is an amenable number.

71872392 is an abundant number, since it is smaller than the sum of its proper divisors (109128408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71872392 is a wasteful number, since it uses less digits than its factorization.

71872392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22005 (or 22001 counting only the distinct ones).

The product of its digits is 42336, while the sum is 39.

The square root of 71872392 is about 8477.7586660626. The cubic root of 71872392 is about 415.7708458100.

The spelling of 71872392 in words is "seventy-one million, eight hundred seventy-two thousand, three hundred ninety-two".