20650992 has 40 divisors (see below), whose sum is σ = 53627520. Its totient is φ = 6847680.

The previous prime is 20650979. The next prime is 20650997. The reversal of 20650992 is 29905602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20650997) 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, 9109 + ... + 11147.

It is an arithmetic number, because the mean of its divisors is an integer number (1340688).

Almost surely, 2^20650992 is an apocalyptic number.

It is an amenable number.

20650992 is an abundant number, since it is smaller than the sum of its proper divisors (32976528).

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

20650992 is a wasteful number, since it uses less digits than its factorization.

20650992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261 (or 2255 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 20650992 is about 4544.3362551642. The cubic root of 20650992 is about 274.3554801451.

The spelling of 20650992 in words is "twenty million, six hundred fifty thousand, nine hundred ninety-two".