20796644 has 24 divisors (see below), whose sum is σ = 42039648. Its totient is φ = 8896640.

The previous prime is 20796641. The next prime is 20796679. The reversal of 20796644 is 44669702.

It is a junction number, because it is equal to n+sod(n) for n = 20796598 and 20796607.

It is not an unprimeable number, because it can be changed into a prime (20796641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13154 + ... + 14649.

It is an arithmetic number, because the mean of its divisors is an integer number (1751652).

Almost surely, 2^20796644 is an apocalyptic number.

It is an amenable number.

20796644 is an abundant number, since it is smaller than the sum of its proper divisors (21243004).

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

20796644 is a wasteful number, since it uses less digits than its factorization.

20796644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27835 (or 27833 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 20796644 is about 4560.3337597154. Note that the first 3 decimals coincide. The cubic root of 20796644 is about 274.9989818144.

The spelling of 20796644 in words is "twenty million, seven hundred ninety-six thousand, six hundred forty-four".