28974125 has 16 divisors (see below), whose sum is σ = 36377328. Its totient is φ = 23040000.

The previous prime is 28974109. The next prime is 28974139. The reversal of 28974125 is 52147982.

It can be written as a sum of positive squares in 8 ways, for example, as 23319241 + 5654884 = 4829^2 + 2378^2 .

It is not a de Polignac number, because 28974125 - 2⁴ = 28974109 is a prime.

It is a Duffinian number.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 23525 + ... + 24725.

It is an arithmetic number, because the mean of its divisors is an integer number (2273583).

Almost surely, 2^28974125 is an apocalyptic number.

28974125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28974125 is a deficient number, since it is larger than the sum of its proper divisors (7403203).

28974125 is a wasteful number, since it uses less digits than its factorization.

28974125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409 (or 1399 counting only the distinct ones).

The product of its digits is 40320, while the sum is 38.

The square root of 28974125 is about 5382.7618375700. The cubic root of 28974125 is about 307.1402804389.

The spelling of 28974125 in words is "twenty-eight million, nine hundred seventy-four thousand, one hundred twenty-five".