28230575 has 12 divisors (see below), whose sum is σ = 35821368. Its totient is φ = 22058400.

The previous prime is 28230569. The next prime is 28230581. The reversal of 28230575 is 57503282.

It is an interprime number because it is at equal distance from previous prime (28230569) and next prime (28230581).

It is not a de Polignac number, because 28230575 - 2⁶ = 28230511 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 12056 + ... + 14205.

It is an arithmetic number, because the mean of its divisors is an integer number (2985114).

Almost surely, 2^28230575 is an apocalyptic number.

28230575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28230575 is a deficient number, since it is larger than the sum of its proper divisors (7590793).

28230575 is a wasteful number, since it uses less digits than its factorization.

28230575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26314 (or 26309 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 28230575 is about 5313.2452418461. The cubic root of 28230575 is about 304.4901452174.

The spelling of 28230575 in words is "twenty-eight million, two hundred thirty thousand, five hundred seventy-five".