220436140 has 24 divisors (see below), whose sum is σ = 483043680. Its totient is φ = 84340608.

The previous prime is 220436137. The next prime is 220436141. The reversal of 220436140 is 41634022.

It is a happy number.

220436140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (220436141) 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, 239145 + ... + 240064.

It is an arithmetic number, because the mean of its divisors is an integer number (20126820).

Almost surely, 2^220436140 is an apocalyptic number.

220436140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220436140 is an abundant number, since it is smaller than the sum of its proper divisors (262607540).

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

220436140 is a wasteful number, since it uses less digits than its factorization.

220436140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479241 (or 479239 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 220436140 is about 14847.0919711572. The cubic root of 220436140 is about 604.0797337834.

The spelling of 220436140 in words is "two hundred twenty million, four hundred thirty-six thousand, one hundred forty".