20019875 has 8 divisors (see below), whose sum is σ = 24984960. Its totient is φ = 16015800.

The previous prime is 20019869. The next prime is 20019887. The reversal of 20019875 is 57891002.

It is not a de Polignac number, because 20019875 - 2⁸ = 20019619 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79955 + ... + 80204.

It is an arithmetic number, because the mean of its divisors is an integer number (3123120).

Almost surely, 2^20019875 is an apocalyptic number.

20019875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20019875 is a deficient number, since it is larger than the sum of its proper divisors (4965085).

20019875 is an equidigital number, since it uses as much as digits as its factorization.

20019875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160174 (or 160164 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 20019875 is about 4474.3574957752. The cubic root of 20019875 is about 271.5316469751.

The spelling of 20019875 in words is "twenty million, nineteen thousand, eight hundred seventy-five".