20318244 has 12 divisors (see below), whose sum is σ = 47409264. Its totient is φ = 6772744.

The previous prime is 20318203. The next prime is 20318251. The reversal of 20318244 is 44281302.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 846582 + ... + 846605.

It is an arithmetic number, because the mean of its divisors is an integer number (3950772).

Almost surely, 2^20318244 is an apocalyptic number.

It is an amenable number.

20318244 is an abundant number, since it is smaller than the sum of its proper divisors (27091020).

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

20318244 is a wasteful number, since it uses less digits than its factorization.

20318244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693194 (or 1693192 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 20318244 is about 4507.5762888719. The cubic root of 20318244 is about 272.8739371546.

Adding to 20318244 its reverse (44281302), we get a palindrome (64599546).

The spelling of 20318244 in words is "twenty million, three hundred eighteen thousand, two hundred forty-four".