20894875 has 8 divisors (see below), whose sum is σ = 26076960. Its totient is φ = 16715800.

The previous prime is 20894869. The next prime is 20894911. The reversal of 20894875 is 57849802.

It is not a de Polignac number, because 20894875 - 2⁵ = 20894843 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83455 + ... + 83704.

It is an arithmetic number, because the mean of its divisors is an integer number (3259620).

Almost surely, 2^20894875 is an apocalyptic number.

20894875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20894875 is a deficient number, since it is larger than the sum of its proper divisors (5182085).

20894875 is an equidigital number, since it uses as much as digits as its factorization.

20894875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167174 (or 167164 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 20894875 is about 4571.0912263922. The cubic root of 20894875 is about 275.4312791993.

The spelling of 20894875 in words is "twenty million, eight hundred ninety-four thousand, eight hundred seventy-five".