20444260 has 24 divisors (see below), whose sum is σ = 43041600. Its totient is φ = 8157024.

The previous prime is 20444257. The next prime is 20444261. The reversal of 20444260 is 6244402.

It is not an unprimeable number, because it can be changed into a prime (20444261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8691 + ... + 10789.

It is an arithmetic number, because the mean of its divisors is an integer number (1793400).

Almost surely, 2^20444260 is an apocalyptic number.

20444260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20444260 is an abundant number, since it is smaller than the sum of its proper divisors (22597340).

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

20444260 is a wasteful number, since it uses less digits than its factorization.

20444260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595 (or 2593 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 20444260 is about 4521.5329259002. The cubic root of 20444260 is about 273.4369063497.

Adding to 20444260 its reverse (6244402), we get a palindrome (26688662).

The spelling of 20444260 in words is "twenty million, four hundred forty-four thousand, two hundred sixty".