71139832 has 32 divisors (see below), whose sum is σ = 141624720. Its totient is φ = 33384960.

The previous prime is 71139821. The next prime is 71139841. The reversal of 71139832 is 23893117.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93598 + ... + 94354.

Almost surely, 2^71139832 is an apocalyptic number.

It is an amenable number.

71139832 is a deficient number, since it is larger than the sum of its proper divisors (70484888).

71139832 is a wasteful number, since it uses less digits than its factorization.

71139832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1471 (or 1467 counting only the distinct ones).

The product of its digits is 9072, while the sum is 34.

The square root of 71139832 is about 8434.4431944261. The cubic root of 71139832 is about 414.3534365028.

The spelling of 71139832 in words is "seventy-one million, one hundred thirty-nine thousand, eight hundred thirty-two".