71573928 has 16 divisors (see below), whose sum is σ = 178934880. Its totient is φ = 23857968.

The previous prime is 71573917. The next prime is 71573951. The reversal of 71573928 is 82937517.

It is a self number, because there is not a number n which added to its sum of digits gives 71573928.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1491100 + ... + 1491147.

It is an arithmetic number, because the mean of its divisors is an integer number (11183430).

Almost surely, 2^71573928 is an apocalyptic number.

It is an amenable number.

71573928 is an abundant number, since it is smaller than the sum of its proper divisors (107360952).

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

71573928 is a wasteful number, since it uses less digits than its factorization.

71573928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2982256 (or 2982252 counting only the distinct ones).

The product of its digits is 105840, while the sum is 42.

The square root of 71573928 is about 8460.1375875337. The cubic root of 71573928 is about 415.1945243764.

The spelling of 71573928 in words is "seventy-one million, five hundred seventy-three thousand, nine hundred twenty-eight".