20044724 has 36 divisors (see below), whose sum is σ = 42134400. Its totient is φ = 8310960.

The previous prime is 20044723. The next prime is 20044747. The reversal of 20044724 is 42744002.

It is a self number, because there is not a number n which added to its sum of digits gives 20044724.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20044721) 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, 4427 + ... + 7725.

It is an arithmetic number, because the mean of its divisors is an integer number (1170400).

Almost surely, 2^20044724 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20044724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21067200).

20044724 is an abundant number, since it is smaller than the sum of its proper divisors (22089676).

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

20044724 is a wasteful number, since it uses less digits than its factorization.

20044724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3348 (or 3339 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 20044724 is about 4477.1334579170. The cubic root of 20044724 is about 271.6439437169.

Adding to 20044724 its reverse (42744002), we get a palindrome (62788726).

The spelling of 20044724 in words is "twenty million, forty-four thousand, seven hundred twenty-four".