20385792 has 156 divisors (see below), whose sum is σ = 68149120. Its totient is φ = 5750784.

The previous prime is 20385791. The next prime is 20385823. The reversal of 20385792 is 29758302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20385791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 258009 + ... + 258087.

Almost surely, 2^20385792 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 20385792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34074560).

20385792 is an abundant number, since it is smaller than the sum of its proper divisors (47763328).

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

20385792 is an equidigital number, since it uses as much as digits as its factorization.

20385792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 20385792 is about 4515.0627902611. The cubic root of 20385792 is about 273.1759924655.

The spelling of 20385792 in words is "twenty million, three hundred eighty-five thousand, seven hundred ninety-two".