20214444 has 12 divisors (see below), whose sum is σ = 47167064. Its totient is φ = 6738144.

The previous prime is 20214437. The next prime is 20214451. The reversal of 20214444 is 44441202.

It is an interprime number because it is at equal distance from previous prime (20214437) and next prime (20214451).

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

It is a self number, because there is not a number n which added to its sum of digits gives 20214444.

It is a congruent number.

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, 842257 + ... + 842280.

Almost surely, 2^20214444 is an apocalyptic number.

It is an amenable number.

20214444 is an abundant number, since it is smaller than the sum of its proper divisors (26952620).

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

20214444 is a wasteful number, since it uses less digits than its factorization.

20214444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684544 (or 1684542 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 20214444 is about 4496.0475976128. The cubic root of 20214444 is about 272.4084657355.

Adding to 20214444 its reverse (44441202), we get a palindrome (64655646).

The spelling of 20214444 in words is "twenty million, two hundred fourteen thousand, four hundred forty-four".