28818552 has 32 divisors (see below), whose sum is σ = 82339200. Its totient is φ = 8233824.

The previous prime is 28818541. The next prime is 28818571. The reversal of 28818552 is 25581882.

It is a self number, because there is not a number n which added to its sum of digits gives 28818552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85602 + ... + 85937.

It is an arithmetic number, because the mean of its divisors is an integer number (2573100).

Almost surely, 2^28818552 is an apocalyptic number.

It is an amenable number.

28818552 is an abundant number, since it is smaller than the sum of its proper divisors (53520648).

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

28818552 is a wasteful number, since it uses less digits than its factorization.

28818552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171555 (or 171551 counting only the distinct ones).

The product of its digits is 51200, while the sum is 39.

The square root of 28818552 is about 5368.2913482783. The cubic root of 28818552 is about 306.5895762957.

The spelling of 28818552 in words is "twenty-eight million, eight hundred eighteen thousand, five hundred fifty-two".