20444570 has 16 divisors (see below), whose sum is σ = 38737440. Its totient is φ = 7747344.

The previous prime is 20444569. The next prime is 20444579. The reversal of 20444570 is 7544402.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20444579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53612 + ... + 53991.

It is an arithmetic number, because the mean of its divisors is an integer number (2421090).

Almost surely, 2^20444570 is an apocalyptic number.

20444570 is a deficient number, since it is larger than the sum of its proper divisors (18292870).

20444570 is a wasteful number, since it uses less digits than its factorization.

20444570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107629.

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 20444570 is about 4521.5672061797. The cubic root of 20444570 is about 273.4382884004.

Adding to 20444570 its reverse (7544402), we get a palindrome (27988972).

The spelling of 20444570 in words is "twenty million, four hundred forty-four thousand, five hundred seventy".