28956425 has 12 divisors (see below), whose sum is σ = 37467840. Its totient is φ = 22157520.

The previous prime is 28956409. The next prime is 28956443. The reversal of 28956425 is 52465982.

It is not a de Polignac number, because 28956425 - 2⁴ = 28956409 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24605 + ... + 25754.

It is an arithmetic number, because the mean of its divisors is an integer number (3122320).

Almost surely, 2^28956425 is an apocalyptic number.

28956425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28956425 is a deficient number, since it is larger than the sum of its proper divisors (8511415).

28956425 is a wasteful number, since it uses less digits than its factorization.

28956425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50392 (or 50387 counting only the distinct ones).

The product of its digits is 172800, while the sum is 41.

The square root of 28956425 is about 5381.1174490063. The cubic root of 28956425 is about 307.0777247350.

The spelling of 28956425 in words is "twenty-eight million, nine hundred fifty-six thousand, four hundred twenty-five".