71749272 has 32 divisors (see below), whose sum is σ = 204998400. Its totient is φ = 20499744.

The previous prime is 71749261. The next prime is 71749297. The reversal of 71749272 is 27294717.

It is a self number, because there is not a number n which added to its sum of digits gives 71749272.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213372 + ... + 213707.

It is an arithmetic number, because the mean of its divisors is an integer number (6406200).

Almost surely, 2^71749272 is an apocalyptic number.

It is an amenable number.

71749272 is an abundant number, since it is smaller than the sum of its proper divisors (133249128).

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

71749272 is a wasteful number, since it uses less digits than its factorization.

71749272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427095 (or 427091 counting only the distinct ones).

The product of its digits is 49392, while the sum is 39.

The square root of 71749272 is about 8470.4942004584. The cubic root of 71749272 is about 415.5332999648.

The spelling of 71749272 in words is "seventy-one million, seven hundred forty-nine thousand, two hundred seventy-two".