20944002 has 16 divisors (see below), whose sum is σ = 42167232. Its totient is φ = 6934800.

The previous prime is 20943991. The next prime is 20944019. The reversal of 20944002 is 20044902.

It is a self number, because there is not a number n which added to its sum of digits gives 20944002.

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, 10653 + ... + 12464.

It is an arithmetic number, because the mean of its divisors is an integer number (2635452).

Almost surely, 2^20944002 is an apocalyptic number.

20944002 is an abundant number, since it is smaller than the sum of its proper divisors (21223230).

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

20944002 is a wasteful number, since it uses less digits than its factorization.

20944002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23273.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 20944002 is about 4576.4617336978. The cubic root of 20944002 is about 275.6469703950.

Adding to 20944002 its reverse (20044902), we get a palindrome (40988904).

The spelling of 20944002 in words is "twenty million, nine hundred forty-four thousand, two".