28964375 has 30 divisors (see below), whose sum is σ = 39887232. Its totient is φ = 21010000.

The previous prime is 28964371. The next prime is 28964389. The reversal of 28964375 is 57346982.

It is not a de Polignac number, because 28964375 - 2² = 28964371 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28964371) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 75434 + ... + 75816.

Almost surely, 2^28964375 is an apocalyptic number.

28964375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28964375 is a deficient number, since it is larger than the sum of its proper divisors (10922857).

28964375 is an equidigital number, since it uses as much as digits as its factorization.

28964375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425 (or 399 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The square root of 28964375 is about 5381.8560924648. The cubic root of 28964375 is about 307.1058249411.

The spelling of 28964375 in words is "twenty-eight million, nine hundred sixty-four thousand, three hundred seventy-five".