20368992 has 96 divisors (see below), whose sum is σ = 64737792. Its totient is φ = 5474304.

The previous prime is 20368987. The next prime is 20369017. The reversal of 20368992 is 29986302.

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20368992.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10533 + ... + 12315.

It is an arithmetic number, because the mean of its divisors is an integer number (674352).

Almost surely, 2^20368992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20368992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32368896).

20368992 is an abundant number, since it is smaller than the sum of its proper divisors (44368800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20368992 is a wasteful number, since it uses less digits than its factorization.

20368992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820 (or 1812 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 20368992 is about 4513.2019675614. The cubic root of 20368992 is about 273.1009300895.

The spelling of 20368992 in words is "twenty million, three hundred sixty-eight thousand, nine hundred ninety-two".