20983692 has 24 divisors (see below), whose sum is σ = 49237552. Its totient is φ = 6955200.

The previous prime is 20983681. The next prime is 20983693. The reversal of 20983692 is 29638902.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20983692.

It is not an unprimeable number, because it can be changed into a prime (20983693) 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, 2659 + ... + 7002.

Almost surely, 2^20983692 is an apocalyptic number.

It is an amenable number.

20983692 is an abundant number, since it is smaller than the sum of its proper divisors (28253860).

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

20983692 is a wasteful number, since it uses less digits than its factorization.

20983692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9849 (or 9847 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 20983692 is about 4580.7960006968. The cubic root of 20983692 is about 275.8209824204.

The spelling of 20983692 in words is "twenty million, nine hundred eighty-three thousand, six hundred ninety-two".