28858925 has 12 divisors (see below), whose sum is σ = 35920320. Its totient is φ = 22999920.

The previous prime is 28858919. The next prime is 28858961. The reversal of 28858925 is 52985882.

It is a happy number.

It is not a de Polignac number, because 28858925 - 2⁴ = 28858909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28858925.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5036 + ... + 9114.

It is an arithmetic number, because the mean of its divisors is an integer number (2993360).

Almost surely, 2^28858925 is an apocalyptic number.

28858925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28858925 is a deficient number, since it is larger than the sum of its proper divisors (7061395).

28858925 is a wasteful number, since it uses less digits than its factorization.

28858925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4372 (or 4367 counting only the distinct ones).

The product of its digits is 460800, while the sum is 47.

The square root of 28858925 is about 5372.0503534498. The cubic root of 28858925 is about 306.7326804694.

The spelling of 28858925 in words is "twenty-eight million, eight hundred fifty-eight thousand, nine hundred twenty-five".