20707044 has 48 divisors (see below), whose sum is σ = 50433600. Its totient is φ = 6604416.

The previous prime is 20707033. The next prime is 20707051. The reversal of 20707044 is 44070702.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54447 + ... + 54825.

It is an arithmetic number, because the mean of its divisors is an integer number (1050700).

Almost surely, 2^20707044 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 20707044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25216800).

20707044 is an abundant number, since it is smaller than the sum of its proper divisors (29726556).

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

20707044 is a wasteful number, since it uses less digits than its factorization.

20707044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572 (or 570 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 20707044 is about 4550.4993132622. The cubic root of 20707044 is about 274.6034792227.

Adding to 20707044 its reverse (44070702), we get a palindrome (64777746).

The spelling of 20707044 in words is "twenty million, seven hundred seven thousand, forty-four".