71633872 has 20 divisors (see below), whose sum is σ = 142019680. Its totient is φ = 34983648.

The previous prime is 71633747. The next prime is 71633873. The reversal of 71633872 is 27833617.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71633873) 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, 51372 + ... + 52747.

It is an arithmetic number, because the mean of its divisors is an integer number (7100984).

Almost surely, 2^71633872 is an apocalyptic number.

It is an amenable number.

71633872 is a deficient number, since it is larger than the sum of its proper divisors (70385808).

71633872 is a wasteful number, since it uses less digits than its factorization.

71633872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104170 (or 104164 counting only the distinct ones).

The product of its digits is 42336, while the sum is 37.

The square root of 71633872 is about 8463.6795780559. The cubic root of 71633872 is about 415.3104021193.

The spelling of 71633872 in words is "seventy-one million, six hundred thirty-three thousand, eight hundred seventy-two".