20890592 has 12 divisors (see below), whose sum is σ = 41128416. Its totient is φ = 10445280.

The previous prime is 20890591. The next prime is 20890619. The reversal of 20890592 is 29509802.

It is a super-2 number, since 2×20890592² = 872833668220928, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20890591) 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 as a sum of consecutive naturals, namely, 326384 + ... + 326447.

It is an arithmetic number, because the mean of its divisors is an integer number (3427368).

Almost surely, 2^20890592 is an apocalyptic number.

It is an amenable number.

20890592 is a deficient number, since it is larger than the sum of its proper divisors (20237824).

20890592 is an equidigital number, since it uses as much as digits as its factorization.

20890592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652841 (or 652833 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 20890592 is about 4570.6227146856. The cubic root of 20890592 is about 275.4124587504.

The spelling of 20890592 in words is "twenty million, eight hundred ninety thousand, five hundred ninety-two".