20944896 has 96 divisors (see below), whose sum is σ = 63947520. Its totient is φ = 5971968.

The previous prime is 20944883. The next prime is 20944907. The reversal of 20944896 is 69844902.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 42765 + ... + 43251.

It is an arithmetic number, because the mean of its divisors is an integer number (666120).

Almost surely, 2^20944896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20944896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31973760).

20944896 is an abundant number, since it is smaller than the sum of its proper divisors (43002624).

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

20944896 is an equidigital number, since it uses as much as digits as its factorization.

20944896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519 (or 499 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 20944896 is about 4576.5594063663. The cubic root of 20944896 is about 275.6508923594.

The spelling of 20944896 in words is "twenty million, nine hundred forty-four thousand, eight hundred ninety-six".