20444368 has 60 divisors (see below), whose sum is σ = 46754820. Its totient is φ = 8633856.

The previous prime is 20444357. The next prime is 20444371. The reversal of 20444368 is 86344402.

It can be written as a sum of positive squares in 2 ways, for example, as 12446784 + 7997584 = 3528^2 + 2828^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69630 + ... + 69922.

It is an arithmetic number, because the mean of its divisors is an integer number (779247).

Almost surely, 2^20444368 is an apocalyptic number.

20444368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20444368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23377410).

20444368 is an abundant number, since it is smaller than the sum of its proper divisors (26310452).

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

20444368 is a wasteful number, since it uses less digits than its factorization.

20444368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 391 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 20444368 is about 4521.5448687368. The cubic root of 20444368 is about 273.4373878400.

The spelling of 20444368 in words is "twenty million, four hundred forty-four thousand, three hundred sixty-eight".