28368525 has 24 divisors (see below), whose sum is σ = 48523680. Its totient is φ = 14607040.

The previous prime is 28368511. The next prime is 28368533. The reversal of 28368525 is 52586382.

It is not a de Polignac number, because 28368525 - 2¹³ = 28360333 is a prime.

It is a congruent number.

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, 4347 + ... + 8696.

It is an arithmetic number, because the mean of its divisors is an integer number (2021820).

Almost surely, 2^28368525 is an apocalyptic number.

28368525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28368525 is a deficient number, since it is larger than the sum of its proper divisors (20155155).

28368525 is a wasteful number, since it uses less digits than its factorization.

28368525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13085 (or 13080 counting only the distinct ones).

The product of its digits is 115200, while the sum is 39.

The square root of 28368525 is about 5326.2111298746. The cubic root of 28368525 is about 304.9853079011.

The spelling of 28368525 in words is "twenty-eight million, three hundred sixty-eight thousand, five hundred twenty-five".