20375889 has 4 divisors (see below), whose sum is σ = 27167856. Its totient is φ = 13583924.

The previous prime is 20375881. The next prime is 20375909. The reversal of 20375889 is 98857302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20375889 - 2³ = 20375881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20375889.

It is not an unprimeable number, because it can be changed into a prime (20375881) 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 3 ways as a sum of consecutive naturals, for example, 3395979 + ... + 3395984.

It is an arithmetic number, because the mean of its divisors is an integer number (6791964).

Almost surely, 2^20375889 is an apocalyptic number.

It is an amenable number.

20375889 is a deficient number, since it is larger than the sum of its proper divisors (6791967).

20375889 is an equidigital number, since it uses as much as digits as its factorization.

20375889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6791966.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 20375889 is about 4513.9659945551. The cubic root of 20375889 is about 273.1317508678.

The spelling of 20375889 in words is "twenty million, three hundred seventy-five thousand, eight hundred eighty-nine".