28265992 has 16 divisors (see below), whose sum is σ = 53352000. Its totient is φ = 14038800.

The previous prime is 28265983. The next prime is 28266059. The reversal of 28265992 is 29956282.

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, 10492 + ... + 12907.

It is an arithmetic number, because the mean of its divisors is an integer number (3334500).

Almost surely, 2^28265992 is an apocalyptic number.

It is an amenable number.

28265992 is a deficient number, since it is larger than the sum of its proper divisors (25086008).

28265992 is a wasteful number, since it uses less digits than its factorization.

28265992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23556 (or 23552 counting only the distinct ones).

The product of its digits is 155520, while the sum is 43.

The square root of 28265992 is about 5316.5770943343. The cubic root of 28265992 is about 304.6174259031.

The spelling of 28265992 in words is "twenty-eight million, two hundred sixty-five thousand, nine hundred ninety-two".