220455144 has 96 divisors (see below), whose sum is σ = 734872320. Its totient is φ = 58140288.

The previous prime is 220455127. The next prime is 220455163. The reversal of 220455144 is 441554022.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10272 + ... + 23375.

It is an arithmetic number, because the mean of its divisors is an integer number (7654920).

Almost surely, 2^220455144 is an apocalyptic number.

220455144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

220455144 is an abundant number, since it is smaller than the sum of its proper divisors (514417176).

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

220455144 is a wasteful number, since it uses less digits than its factorization.

220455144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33679 (or 33672 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 220455144 is about 14847.7319480115. The cubic root of 220455144 is about 604.0970927055.

The spelling of 220455144 in words is "two hundred twenty million, four hundred fifty-five thousand, one hundred forty-four".