20324889 has 48 divisors (see below), whose sum is σ = 34245120. Its totient is φ = 11508480.

The previous prime is 20324881. The next prime is 20324891. The reversal of 20324889 is 98842302.

It is not a de Polignac number, because 20324889 - 2³ = 20324881 is a prime.

It is a super-2 number, since 2×20324889² = 826202225724642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20324881) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 91032 + ... + 91254.

It is an arithmetic number, because the mean of its divisors is an integer number (713440).

Almost surely, 2^20324889 is an apocalyptic number.

It is an amenable number.

20324889 is a deficient number, since it is larger than the sum of its proper divisors (13920231).

20324889 is a wasteful number, since it uses less digits than its factorization.

20324889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 299 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 20324889 is about 4508.3133209661. The cubic root of 20324889 is about 272.9036813536.

The spelling of 20324889 in words is "twenty million, three hundred twenty-four thousand, eight hundred eighty-nine".