20952875 has 8 divisors (see below), whose sum is σ = 26149344. Its totient is φ = 16762200.

The previous prime is 20952871. The next prime is 20952887. The reversal of 20952875 is 57825902.

It is not a de Polignac number, because 20952875 - 2² = 20952871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20952871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83687 + ... + 83936.

It is an arithmetic number, because the mean of its divisors is an integer number (3268668).

Almost surely, 2^20952875 is an apocalyptic number.

20952875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20952875 is a deficient number, since it is larger than the sum of its proper divisors (5196469).

20952875 is an equidigital number, since it uses as much as digits as its factorization.

20952875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167638 (or 167628 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 20952875 is about 4577.4310480880. The cubic root of 20952875 is about 275.6858911683.

The spelling of 20952875 in words is "twenty million, nine hundred fifty-two thousand, eight hundred seventy-five".