28698375 has 32 divisors (see below), whose sum is σ = 48282624. Its totient is φ = 15136800.

The previous prime is 28698361. The next prime is 28698389. The reversal of 28698375 is 57389682.

It is an interprime number because it is at equal distance from previous prime (28698361) and next prime (28698389).

It is not a de Polignac number, because 28698375 - 2⁸ = 28698119 is a prime.

Its product of digits (725760) is a multiple of the sum of its prime factors (864).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38254 + ... + 38996.

It is an arithmetic number, because the mean of its divisors is an integer number (1508832).

Almost surely, 2^28698375 is an apocalyptic number.

28698375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28698375 is a deficient number, since it is larger than the sum of its proper divisors (19584249).

28698375 is a wasteful number, since it uses less digits than its factorization.

28698375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864 (or 854 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The square root of 28698375 is about 5357.0864282742. The cubic root of 28698375 is about 306.1628101091.

The spelling of 28698375 in words is "twenty-eight million, six hundred ninety-eight thousand, three hundred seventy-five".