20238444 has 24 divisors (see below), whose sum is σ = 52470320. Its totient is φ = 6746112.

The previous prime is 20238437. The next prime is 20238469. The reversal of 20238444 is 44483202.

It is a happy number.

It is a super-2 number, since 2×20238444² = 819189231082272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93589 + ... + 93804.

Almost surely, 2^20238444 is an apocalyptic number.

It is an amenable number.

20238444 is an abundant number, since it is smaller than the sum of its proper divisors (32231876).

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

20238444 is a wasteful number, since it uses less digits than its factorization.

20238444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187406 (or 187398 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 20238444 is about 4498.7158167637. The cubic root of 20238444 is about 272.5162305514.

The spelling of 20238444 in words is "twenty million, two hundred thirty-eight thousand, four hundred forty-four".