71951928 has 16 divisors (see below), whose sum is σ = 179879880. Its totient is φ = 23983968.

The previous prime is 71951927. The next prime is 71951933. The reversal of 71951928 is 82915917.

It is a self number, because there is not a number n which added to its sum of digits gives 71951928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71951921) 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, 1498975 + ... + 1499022.

Almost surely, 2^71951928 is an apocalyptic number.

It is an amenable number.

71951928 is an abundant number, since it is smaller than the sum of its proper divisors (107927952).

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

71951928 is a wasteful number, since it uses less digits than its factorization.

71951928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2998006 (or 2998002 counting only the distinct ones).

The product of its digits is 45360, while the sum is 42.

The square root of 71951928 is about 8482.4482314954. The cubic root of 71951928 is about 415.9241571548.

The spelling of 71951928 in words is "seventy-one million, nine hundred fifty-one thousand, nine hundred twenty-eight".