20422044 has 30 divisors (see below), whose sum is σ = 53388104. Its totient is φ = 6807240.

The previous prime is 20422043. The next prime is 20422079. The reversal of 20422044 is 44022402.

It is a super-2 number, since 2×20422044² = 834119762275872, which contains 22 as substring.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20422043) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 31192 + ... + 31839.

Almost surely, 2^20422044 is an apocalyptic number.

It is an amenable number.

20422044 is an abundant number, since it is smaller than the sum of its proper divisors (32966060).

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

20422044 is a wasteful number, since it uses less digits than its factorization.

20422044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63047 (or 63036 counting only the distinct ones).

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

The square root of 20422044 is about 4519.0755691845. The cubic root of 20422044 is about 273.3378259556.

Adding to 20422044 its reverse (44022402), we get a palindrome (64444446).

The spelling of 20422044 in words is "twenty million, four hundred twenty-two thousand, forty-four".