20441764 has 24 divisors (see below), whose sum is σ = 41203008. Its totient is φ = 8692320.

The previous prime is 20441761. The next prime is 20441791. The reversal of 20441764 is 46714402.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20441761) 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, 882 + ... + 6454.

It is an arithmetic number, because the mean of its divisors is an integer number (1716792).

Almost surely, 2^20441764 is an apocalyptic number.

It is an amenable number.

20441764 is an abundant number, since it is smaller than the sum of its proper divisors (20761244).

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

20441764 is a wasteful number, since it uses less digits than its factorization.

20441764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5715 (or 5713 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 20441764 is about 4521.2569048883. The cubic root of 20441764 is about 273.4257781032.

The spelling of 20441764 in words is "twenty million, four hundred forty-one thousand, seven hundred sixty-four".