20042244 has 36 divisors (see below), whose sum is σ = 52299520. Its totient is φ = 6464880.

The previous prime is 20042173. The next prime is 20042249. The reversal of 20042244 is 44224002.

20042244 is a `hidden beast` number, since 200 + 422 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20042249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7864 + ... + 10095.

Almost surely, 2^20042244 is an apocalyptic number.

It is an amenable number.

20042244 is an abundant number, since it is smaller than the sum of its proper divisors (32257276).

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

20042244 is a wasteful number, since it uses less digits than its factorization.

20042244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18000 (or 17995 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 20042244 is about 4476.8564864199. The cubic root of 20042244 is about 271.6327403571.

Adding to 20042244 its reverse (44224002), we get a palindrome (64266246).

The spelling of 20042244 in words is "twenty million, forty-two thousand, two hundred forty-four".