220440380 has 24 divisors (see below), whose sum is σ = 477859200. Its totient is φ = 85331520.

The previous prime is 220440379. The next prime is 220440383. The reversal of 220440380 is 83044022.

It is a super-2 number, since 2×220440380² = 97187922269088800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220440383) 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, 177155 + ... + 178394.

It is an arithmetic number, because the mean of its divisors is an integer number (19910800).

Almost surely, 2^220440380 is an apocalyptic number.

220440380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220440380 is an abundant number, since it is smaller than the sum of its proper divisors (257418820).

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

220440380 is a wasteful number, since it uses less digits than its factorization.

220440380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355589 (or 355587 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 220440380 is about 14847.2347593752. The cubic root of 220440380 is about 604.0836068350.

The spelling of 220440380 in words is "two hundred twenty million, four hundred forty thousand, three hundred eighty".