20580992 has 16 divisors (see below), whose sum is σ = 41001450. Its totient is φ = 10290432.

The previous prime is 20580979. The next prime is 20580997. The reversal of 20580992 is 29908502.

It can be written as a sum of positive squares in only one way, i.e., 17106496 + 3474496 = 4136^2 + 1864^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (20580997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80267 + ... + 80522.

Almost surely, 2^20580992 is an apocalyptic number.

It is an amenable number.

20580992 is a deficient number, since it is larger than the sum of its proper divisors (20420458).

20580992 is an equidigital number, since it uses as much as digits as its factorization.

20580992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160803 (or 160791 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 20580992 is about 4536.6278225131. The cubic root of 20580992 is about 274.0451379275.

The spelling of 20580992 in words is "twenty million, five hundred eighty thousand, nine hundred ninety-two".