28575798 has 32 divisors (see below), whose sum is σ = 60777216. Its totient is φ = 8936928.

The previous prime is 28575763. The next prime is 28575839. The reversal of 28575798 is 89757582.

It is a self number, because there is not a number n which added to its sum of digits gives 28575798.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5361 + ... + 9267.

It is an arithmetic number, because the mean of its divisors is an integer number (1899288).

Almost surely, 2^28575798 is an apocalyptic number.

28575798 is an abundant number, since it is smaller than the sum of its proper divisors (32201418).

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

28575798 is a wasteful number, since it uses less digits than its factorization.

28575798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3988.

The product of its digits is 1411200, while the sum is 51.

The square root of 28575798 is about 5345.6335452405. The cubic root of 28575798 is about 305.7262920514.

The spelling of 28575798 in words is "twenty-eight million, five hundred seventy-five thousand, seven hundred ninety-eight".