28937925 has 48 divisors (see below), whose sum is σ = 54450880. Its totient is φ = 15059520.

The previous prime is 28937869. The next prime is 28937929. The reversal of 28937925 is 52973982.

It is not a de Polignac number, because 28937925 - 2⁶ = 28937861 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28937929) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28527 + ... + 29523.

Almost surely, 2^28937925 is an apocalyptic number.

28937925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28937925 is a deficient number, since it is larger than the sum of its proper divisors (25512955).

28937925 is a wasteful number, since it uses less digits than its factorization.

28937925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059 (or 1048 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 28937925 is about 5379.3982005425. The cubic root of 28937925 is about 307.0123144024.

The spelling of 28937925 in words is "twenty-eight million, nine hundred thirty-seven thousand, nine hundred twenty-five".