20983796 has 12 divisors (see below), whose sum is σ = 36795780. Its totient is φ = 10470720.

The previous prime is 20983789. The next prime is 20983799. The reversal of 20983796 is 69738902.

It can be written as a sum of positive squares in 2 ways, for example, as 5664400 + 15319396 = 2380^2 + 3914^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20983799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2951 + ... + 7118.

It is an arithmetic number, because the mean of its divisors is an integer number (3066315).

Almost surely, 2^20983796 is an apocalyptic number.

It is an amenable number.

20983796 is a deficient number, since it is larger than the sum of its proper divisors (15811984).

20983796 is a wasteful number, since it uses less digits than its factorization.

20983796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10594 (or 10592 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 20983796 is about 4580.8073524216. The cubic root of 20983796 is about 275.8214380971.

The spelling of 20983796 in words is "twenty million, nine hundred eighty-three thousand, seven hundred ninety-six".