28825885 has 16 divisors (see below), whose sum is σ = 37858752. Its totient is φ = 20896000.

The previous prime is 28825883. The next prime is 28825903. The reversal of 28825885 is 58852882.

It is not a de Polignac number, because 28825885 - 2¹ = 28825883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28825883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21402 + ... + 22708.

It is an arithmetic number, because the mean of its divisors is an integer number (2366172).

Almost surely, 2^28825885 is an apocalyptic number.

It is an amenable number.

28825885 is a deficient number, since it is larger than the sum of its proper divisors (9032867).

28825885 is a wasteful number, since it uses less digits than its factorization.

28825885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724.

The product of its digits is 409600, while the sum is 46.

The square root of 28825885 is about 5368.9742968280. The cubic root of 28825885 is about 306.6155784198.

The spelling of 28825885 in words is "twenty-eight million, eight hundred twenty-five thousand, eight hundred eighty-five".