71712734 has 32 divisors (see below), whose sum is σ = 116852736. Its totient is φ = 32931360.

The previous prime is 71712701. The next prime is 71712757. The reversal of 71712734 is 43721717.

It is a self number, because there is not a number n which added to its sum of digits gives 71712734.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98279 + ... + 99005.

It is an arithmetic number, because the mean of its divisors is an integer number (3651648).

Almost surely, 2^71712734 is an apocalyptic number.

71712734 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

71712734 is a deficient number, since it is larger than the sum of its proper divisors (45140002).

71712734 is a wasteful number, since it uses less digits than its factorization.

71712734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840.

The product of its digits is 8232, while the sum is 32.

The square root of 71712734 is about 8468.3371449181. The cubic root of 71712734 is about 415.4627518218.

The spelling of 71712734 in words is "seventy-one million, seven hundred twelve thousand, seven hundred thirty-four".