20875299 has 16 divisors (see below), whose sum is σ = 28416000. Its totient is φ = 13628736.

The previous prime is 20875291. The next prime is 20875313. The reversal of 20875299 is 99257802.

It is not a de Polignac number, because 20875299 - 2³ = 20875291 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20875299.

It is not an unprimeable number, because it can be changed into a prime (20875291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43342 + ... + 43820.

It is an arithmetic number, because the mean of its divisors is an integer number (1776000).

Almost surely, 2^20875299 is an apocalyptic number.

20875299 is a deficient number, since it is larger than the sum of its proper divisors (7540701).

20875299 is a wasteful number, since it uses less digits than its factorization.

20875299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 20875299 is about 4568.9494416113. The cubic root of 20875299 is about 275.3452369292.

The spelling of 20875299 in words is "twenty million, eight hundred seventy-five thousand, two hundred ninety-nine".