71812492 has 12 divisors (see below), whose sum is σ = 129726016. Its totient is φ = 34747920.

The previous prime is 71812469. The next prime is 71812493. The reversal of 71812492 is 29421817.

It is a hoax number, since the sum of its digits (34) 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 (71812493) 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, 289443 + ... + 289690.

Almost surely, 2^71812492 is an apocalyptic number.

It is an amenable number.

71812492 is a deficient number, since it is larger than the sum of its proper divisors (57913524).

71812492 is a wasteful number, since it uses less digits than its factorization.

71812492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579168 (or 579166 counting only the distinct ones).

The product of its digits is 8064, while the sum is 34.

The square root of 71812492 is about 8474.2251563196. The cubic root of 71812492 is about 415.6553095804.

The spelling of 71812492 in words is "seventy-one million, eight hundred twelve thousand, four hundred ninety-two".