444340220 has 48 divisors (see below), whose sum is σ = 1030978368. Its totient is φ = 160005120.

The previous prime is 444340217. The next prime is 444340297. The reversal of 444340220 is 22043444.

It is a super-2 number, since 2×444340220² = 394876462219296800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

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, 20591 + ... + 36230.

It is an arithmetic number, because the mean of its divisors is an integer number (21478716).

Almost surely, 2^444340220 is an apocalyptic number.

It is an amenable number.

444340220 is an abundant number, since it is smaller than the sum of its proper divisors (586638148).

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

444340220 is a wasteful number, since it uses less digits than its factorization.

444340220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56870 (or 56868 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 444340220 is about 21079.3790231117. The cubic root of 444340220 is about 763.0831701023.

Adding to 444340220 its reverse (22043444), we get a palindrome (466383664).

The spelling of 444340220 in words is "four hundred forty-four million, three hundred forty thousand, two hundred twenty".