20622992 has 20 divisors (see below), whose sum is σ = 43031100. Its totient is φ = 9518208.

The previous prime is 20622983. The next prime is 20623003. The reversal of 20622992 is 29922602.

It can be written as a sum of positive squares in 2 ways, for example, as 9759376 + 10863616 = 3124^2 + 3296^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49367 + ... + 49782.

It is an arithmetic number, because the mean of its divisors is an integer number (2151555).

Almost surely, 2^20622992 is an apocalyptic number.

It is an amenable number.

20622992 is an abundant number, since it is smaller than the sum of its proper divisors (22408108).

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

20622992 is a wasteful number, since it uses less digits than its factorization.

20622992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99170 (or 99164 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 20622992 is about 4541.2544522411. The cubic root of 20622992 is about 274.2314275416.

The spelling of 20622992 in words is "twenty million, six hundred twenty-two thousand, nine hundred ninety-two".