71728852 has 24 divisors (see below), whose sum is σ = 135945992. Its totient is φ = 32918400.

The previous prime is 71728843. The next prime is 71728871. The reversal of 71728852 is 25882717.

It can be written as a sum of positive squares in 4 ways, for example, as 427716 + 71301136 = 654^2 + 8444^2 .

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, 5602 + ... + 13222.

Almost surely, 2^71728852 is an apocalyptic number.

It is an amenable number.

71728852 is a deficient number, since it is larger than the sum of its proper divisors (64217140).

71728852 is a wasteful number, since it uses less digits than its factorization.

71728852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7819 (or 7817 counting only the distinct ones).

The product of its digits is 62720, while the sum is 40.

The square root of 71728852 is about 8469.2887540808. The cubic root of 71728852 is about 415.4938756620.

The spelling of 71728852 in words is "seventy-one million, seven hundred twenty-eight thousand, eight hundred fifty-two".