71872156 has 12 divisors (see below), whose sum is σ = 125843368. Its totient is φ = 35916912.

The previous prime is 71872153. The next prime is 71872169. The reversal of 71872156 is 65127817.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71872153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6715 + ... + 13741.

Almost surely, 2^71872156 is an apocalyptic number.

It is an amenable number.

71872156 is a deficient number, since it is larger than the sum of its proper divisors (53971212).

71872156 is a wasteful number, since it uses less digits than its factorization.

71872156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9588 (or 9586 counting only the distinct ones).

The product of its digits is 23520, while the sum is 37.

The square root of 71872156 is about 8477.7447472780. The cubic root of 71872156 is about 415.7703907348.

The spelling of 71872156 in words is "seventy-one million, eight hundred seventy-two thousand, one hundred fifty-six".