28323892 has 12 divisors (see below), whose sum is σ = 50621760. Its totient is φ = 13860536.

The previous prime is 28323881. The next prime is 28323913. The reversal of 28323892 is 29832382.

It is a happy number.

It is a congruent number.

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, 75142 + ... + 75517.

It is an arithmetic number, because the mean of its divisors is an integer number (4218480).

Almost surely, 2^28323892 is an apocalyptic number.

It is an amenable number.

28323892 is a deficient number, since it is larger than the sum of its proper divisors (22297868).

28323892 is a wasteful number, since it uses less digits than its factorization.

28323892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150710 (or 150708 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 28323892 is about 5322.0195414899. The cubic root of 28323892 is about 304.8252766173.

It can be divided in two parts, 2832 and 3892, that added together give a square (6724 = 82²).

The spelling of 28323892 in words is "twenty-eight million, three hundred twenty-three thousand, eight hundred ninety-two".