20020992 has 72 divisors (see below), whose sum is σ = 53961600. Its totient is φ = 6589440.

The previous prime is 20020943. The next prime is 20021021. The reversal of 20020992 is 29902002.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 100509 + ... + 100707.

Almost surely, 2^20020992 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 20020992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26980800).

20020992 is an abundant number, since it is smaller than the sum of its proper divisors (33940608).

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

20020992 is a wasteful number, since it uses less digits than its factorization.

20020992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 20020992 is about 4474.4823164250. The cubic root of 20020992 is about 271.5366968769.

Adding to 20020992 its reverse (29902002), we get a palindrome (49922994).

It can be divided in two parts, 20020 and 992, that added together give a palindrome (21012).

The spelling of 20020992 in words is "twenty million, twenty thousand, nine hundred ninety-two".