20070992 has 40 divisors (see below), whose sum is σ = 41396160. Its totient is φ = 9400320.

The previous prime is 20070991. The next prime is 20070997. The reversal of 20070992 is 29907002.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20070991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30992 + ... + 31632.

It is an arithmetic number, because the mean of its divisors is an integer number (1034904).

Almost surely, 2^20070992 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 20070992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20698080).

20070992 is an abundant number, since it is smaller than the sum of its proper divisors (21325168).

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

20070992 is a wasteful number, since it uses less digits than its factorization.

20070992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771 (or 765 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 20070992 is about 4480.0660709414. The cubic root of 20070992 is about 271.7625522913.

Adding to 20070992 its reverse (29907002), we get a palindrome (49977994).

The spelling of 20070992 in words is "twenty million, seventy thousand, nine hundred ninety-two".