20875419 has 12 divisors (see below), whose sum is σ = 30276792. Its totient is φ = 13860000.

The previous prime is 20875409. The next prime is 20875427. The reversal of 20875419 is 91457802.

It is not a de Polignac number, because 20875419 - 2⁴ = 20875403 is a prime.

It is a super-2 number, since 2×20875419² = 871566236851122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20875409) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2362 + ... + 6879.

It is an arithmetic number, because the mean of its divisors is an integer number (2523066).

Almost surely, 2^20875419 is an apocalyptic number.

20875419 is a deficient number, since it is larger than the sum of its proper divisors (9401373).

20875419 is a wasteful number, since it uses less digits than its factorization.

20875419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9498 (or 9495 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 20875419 is about 4568.9625737141. The cubic root of 20875419 is about 275.3457645283.

The spelling of 20875419 in words is "twenty million, eight hundred seventy-five thousand, four hundred nineteen".