28322992 has 10 divisors (see below), whose sum is σ = 54875828. Its totient is φ = 14161488.

The previous prime is 28322981. The next prime is 28323011. The reversal of 28322992 is 29922382.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 885078 + ... + 885109.

Almost surely, 2^28322992 is an apocalyptic number.

It is an amenable number.

28322992 is a deficient number, since it is larger than the sum of its proper divisors (26552836).

28322992 is a wasteful number, since it uses less digits than its factorization.

28322992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770195 (or 1770189 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 28322992 is about 5321.9349864499. The cubic root of 28322992 is about 304.8220479455.

The spelling of 28322992 in words is "twenty-eight million, three hundred twenty-two thousand, nine hundred ninety-two".