28964625 has 16 divisors (see below), whose sum is σ = 48197760. Its totient is φ = 15447600.

The previous prime is 28964623. The next prime is 28964629. The reversal of 28964625 is 52646982.

It is not a de Polignac number, because 28964625 - 2¹ = 28964623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28964623) 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, 38245 + ... + 38994.

It is an arithmetic number, because the mean of its divisors is an integer number (3012360).

Almost surely, 2^28964625 is an apocalyptic number.

28964625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28964625 is a deficient number, since it is larger than the sum of its proper divisors (19233135).

28964625 is an equidigital number, since it uses as much as digits as its factorization.

28964625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77257 (or 77247 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 28964625 is about 5381.8793186024. The cubic root of 28964625 is about 307.1067085119.

The spelling of 28964625 in words is "twenty-eight million, nine hundred sixty-four thousand, six hundred twenty-five".