220020144 has 40 divisors (see below), whose sum is σ = 586724352. Its totient is φ = 70973760.

The previous prime is 220020091. The next prime is 220020149. The reversal of 220020144 is 441020022.

It is not an unprimeable number, because it can be changed into a prime (220020149) 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, 72444 + ... + 75419.

Almost surely, 2^220020144 is an apocalyptic number.

220020144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

220020144 is an abundant number, since it is smaller than the sum of its proper divisors (366704208).

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

220020144 is a wasteful number, since it uses less digits than its factorization.

220020144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147905 (or 147899 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 220020144 is about 14833.0760127493. The cubic root of 220020144 is about 603.6994981955.

Adding to 220020144 its reverse (441020022), we get a palindrome (661040166).

The spelling of 220020144 in words is "two hundred twenty million, twenty thousand, one hundred forty-four".