28825986 has 16 divisors (see below), whose sum is σ = 65888064. Its totient is φ = 8235984.

The previous prime is 28825963. The next prime is 28826009. The reversal of 28825986 is 68952882.

It is an interprime number because it is at equal distance from previous prime (28825963) and next prime (28826009).

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, 343125 + ... + 343208.

It is an arithmetic number, because the mean of its divisors is an integer number (4118004).

Almost surely, 2^28825986 is an apocalyptic number.

28825986 is an abundant number, since it is smaller than the sum of its proper divisors (37062078).

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

28825986 is a wasteful number, since it uses less digits than its factorization.

28825986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686345.

The product of its digits is 552960, while the sum is 48.

The square root of 28825986 is about 5368.9837027132. The cubic root of 28825986 is about 306.6159365255.

The spelling of 28825986 in words is "twenty-eight million, eight hundred twenty-five thousand, nine hundred eighty-six".