28975036 has 12 divisors (see below), whose sum is σ = 50870512. Its totient is φ = 14440608.

The previous prime is 28974989. The next prime is 28975081. The reversal of 28975036 is 63057982.

It is a super-2 number, since 2×28975036² = 1679105422402592, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28975036.

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, 10320 + ... + 12823.

Almost surely, 2^28975036 is an apocalyptic number.

It is an amenable number.

28975036 is a deficient number, since it is larger than the sum of its proper divisors (21895476).

28975036 is a wasteful number, since it uses less digits than its factorization.

28975036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23460 (or 23458 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 28975036 is about 5382.8464588914. The cubic root of 28975036 is about 307.1434994243.

The spelling of 28975036 in words is "twenty-eight million, nine hundred seventy-five thousand, thirty-six".