440320220 has 12 divisors (see below), whose sum is σ = 924672504. Its totient is φ = 176128080.

The previous prime is 440320217. The next prime is 440320259. The reversal of 440320220 is 22023044.

It is a super-2 number, since 2×440320220² = 387763792281696800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11007986 + ... + 11008025.

It is an arithmetic number, because the mean of its divisors is an integer number (77056042).

Almost surely, 2^440320220 is an apocalyptic number.

It is an amenable number.

440320220 is an abundant number, since it is smaller than the sum of its proper divisors (484352284).

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

440320220 is a wasteful number, since it uses less digits than its factorization.

440320220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22016020 (or 22016018 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 440320220 is about 20983.8085199041. The cubic root of 440320220 is about 760.7749597483.

Adding to 440320220 its reverse (22023044), we get a palindrome (462343264).

The spelling of 440320220 in words is "four hundred forty million, three hundred twenty thousand, two hundred twenty".