20423044 has 12 divisors (see below), whose sum is σ = 36326668. Its totient is φ = 10044000.

The previous prime is 20423041. The next prime is 20423071. The reversal of 20423044 is 44032402.

It can be written as a sum of positive squares in 2 ways, for example, as 280900 + 20142144 = 530^2 + 4488^2 .

It is not an unprimeable number, because it can be changed into a prime (20423041) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 41607 + ... + 42094.

Almost surely, 2^20423044 is an apocalyptic number.

It is an amenable number.

20423044 is a deficient number, since it is larger than the sum of its proper divisors (15903624).

20423044 is a wasteful number, since it uses less digits than its factorization.

20423044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83766 (or 83764 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 20423044 is about 4519.1862099276. The cubic root of 20423044 is about 273.3422873661.

Adding to 20423044 its reverse (44032402), we get a palindrome (64455446).

The spelling of 20423044 in words is "twenty million, four hundred twenty-three thousand, forty-four".