28764375 has 60 divisors (see below), whose sum is σ = 51827160. Its totient is φ = 14168000.

The previous prime is 28764361. The next prime is 28764389. The reversal of 28764375 is 57346782.

It is an interprime number because it is at equal distance from previous prime (28764361) and next prime (28764389).

It is not a de Polignac number, because 28764375 - 2¹⁰ = 28763351 is a prime.

Its product of digits (282240) is a multiple of the sum of its prime divisors (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 991861 + ... + 991889.

It is an arithmetic number, because the mean of its divisors is an integer number (863786).

Almost surely, 2^28764375 is an apocalyptic number.

28764375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28764375 is a deficient number, since it is larger than the sum of its proper divisors (23062785).

28764375 is an equidigital number, since it uses as much as digits as its factorization.

28764375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 60 counting only the distinct ones).

The product of its digits is 282240, while the sum is 42.

The square root of 28764375 is about 5363.2429555261. The cubic root of 28764375 is about 306.3973329681.

The spelling of 28764375 in words is "twenty-eight million, seven hundred sixty-four thousand, three hundred seventy-five".