20528375 has 32 divisors (see below), whose sum is σ = 30326400. Its totient is φ = 13574400.

The previous prime is 20528369. The next prime is 20528399. The reversal of 20528375 is 57382502.

It is not a de Polignac number, because 20528375 - 2⁶ = 20528311 is a prime.

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, 24971 + ... + 25779.

It is an arithmetic number, because the mean of its divisors is an integer number (947700).

Almost surely, 2^20528375 is an apocalyptic number.

20528375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20528375 is a deficient number, since it is larger than the sum of its proper divisors (9798025).

20528375 is an equidigital number, since it uses as much as digits as its factorization.

20528375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860 (or 850 counting only the distinct ones).

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

The square root of 20528375 is about 4530.8249800671. The cubic root of 20528375 is about 273.8113989730.

The spelling of 20528375 in words is "twenty million, five hundred twenty-eight thousand, three hundred seventy-five".