220044720 has 160 divisors (see below), whose sum is σ = 784378368. Its totient is φ = 49987584.

The previous prime is 220044707. The next prime is 220044733. The reversal of 220044720 is 27440022.

It is an interprime number because it is at equal distance from previous prime (220044707) and next prime (220044733).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 381072 + ... + 381648.

Almost surely, 2^220044720 is an apocalyptic number.

220044720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220044720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (392189184).

220044720 is an abundant number, since it is smaller than the sum of its proper divisors (564333648).

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

220044720 is a wasteful number, since it uses less digits than its factorization.

220044720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 220044720 is about 14833.9044084826. The cubic root of 220044720 is about 603.7219748746.

Adding to 220044720 its reverse (27440022), we get a palindrome (247484742).

The spelling of 220044720 in words is "two hundred twenty million, forty-four thousand, seven hundred twenty".