28553136 has 20 divisors (see below), whose sum is σ = 73762392. Its totient is φ = 9517696.

The previous prime is 28553113. The next prime is 28553137. The reversal of 28553136 is 63135582.

It is a junction number, because it is equal to n+sod(n) for n = 28553097 and 28553106.

It is not an unprimeable number, because it can be changed into a prime (28553137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297381 + ... + 297476.

Almost surely, 2^28553136 is an apocalyptic number.

It is an amenable number.

28553136 is an abundant number, since it is smaller than the sum of its proper divisors (45209256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28553136 is a wasteful number, since it uses less digits than its factorization.

28553136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594868 (or 594862 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 28553136 is about 5343.5134509048. The cubic root of 28553136 is about 305.6454520629.

The spelling of 28553136 in words is "twenty-eight million, five hundred fifty-three thousand, one hundred thirty-six".