220568240 has 40 divisors (see below), whose sum is σ = 513636768. Its totient is φ = 88087040.

The previous prime is 220568191. The next prime is 220568269. The reversal of 220568240 is 42865022.

It is a tau number, because it is divible by the number of its divisors (40).

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 7 ways as a sum of consecutive naturals, for example, 59069 + ... + 62691.

Almost surely, 2^220568240 is an apocalyptic number.

220568240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220568240 is an abundant number, since it is smaller than the sum of its proper divisors (293068528).

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

220568240 is a wasteful number, since it uses less digits than its factorization.

220568240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4397 (or 4391 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 220568240 is about 14851.5399874895. The cubic root of 220568240 is about 604.2003779419.

The spelling of 220568240 in words is "two hundred twenty million, five hundred sixty-eight thousand, two hundred forty".