20790984 has 32 divisors (see below), whose sum is σ = 52693920. Its totient is φ = 6834816.

The previous prime is 20790947. The next prime is 20791007. The reversal of 20790984 is 48909702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4182 + ... + 7685.

It is an arithmetic number, because the mean of its divisors is an integer number (1646685).

Almost surely, 2^20790984 is an apocalyptic number.

20790984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20790984 is an abundant number, since it is smaller than the sum of its proper divisors (31902936).

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

20790984 is a wasteful number, since it uses less digits than its factorization.

20790984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11949 (or 11945 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 20790984 is about 4559.7131488724. The cubic root of 20790984 is about 274.9740317077.

The spelling of 20790984 in words is "twenty million, seven hundred ninety thousand, nine hundred eighty-four".