28531036 has 12 divisors (see below), whose sum is σ = 51540160. Its totient is φ = 13805280.

The previous prime is 28530979. The next prime is 28531051. The reversal of 28531036 is 63013582.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28530995 and 28531013.

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, 114921 + ... + 115168.

Almost surely, 2^28531036 is an apocalyptic number.

It is an amenable number.

28531036 is a deficient number, since it is larger than the sum of its proper divisors (23009124).

28531036 is a wasteful number, since it uses less digits than its factorization.

28531036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230124 (or 230122 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 28531036 is about 5341.4451228109. The cubic root of 28531036 is about 305.5665756368.

The spelling of 28531036 in words is "twenty-eight million, five hundred thirty-one thousand, thirty-six".