28530175 has 12 divisors (see below), whose sum is σ = 36131616. Its totient is φ = 22337600.

The previous prime is 28530149. The next prime is 28530181. The reversal of 28530175 is 57103582.

28530175 = 756² + 757² + ... + 802².

It is not a de Polignac number, because 28530175 - 2⁹ = 28529663 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, 10966 + ... + 13315.

It is an arithmetic number, because the mean of its divisors is an integer number (3010968).

Almost surely, 2^28530175 is an apocalyptic number.

28530175 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28530175 is a deficient number, since it is larger than the sum of its proper divisors (7601441).

28530175 is a wasteful number, since it uses less digits than its factorization.

28530175 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24338 (or 24333 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 28530175 is about 5341.3645260364. The cubic root of 28530175 is about 305.5635018442.

The spelling of 28530175 in words is "twenty-eight million, five hundred thirty thousand, one hundred seventy-five".