28813850 has 48 divisors (see below), whose sum is σ = 58438968. Its totient is φ = 10506240.

The previous prime is 28813847. The next prime is 28813901. The reversal of 28813850 is 5831882.

It can be written as a sum of positive squares in 12 ways, for example, as 1555009 + 27258841 = 1247^2 + 5221^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28813850.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62822 + ... + 63278.

Almost surely, 2^28813850 is an apocalyptic number.

28813850 is an abundant number, since it is smaller than the sum of its proper divisors (29625118).

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

28813850 is a wasteful number, since it uses less digits than its factorization.

28813850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579 (or 574 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 28813850 is about 5367.8533884599. The cubic root of 28813850 is about 306.5729011276.

The spelling of 28813850 in words is "twenty-eight million, eight hundred thirteen thousand, eight hundred fifty".