220487280 has 160 divisors (see below), whose sum is σ = 779575104. Its totient is φ = 51068928.

The previous prime is 220487257. The next prime is 220487321. The reversal of 220487280 is 82784022.

It is a super-2 number, since 2×220487280² = 97229281283596800, which contains 22 as substring.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 50962 + ... + 55118.

Almost surely, 2^220487280 is an apocalyptic number.

220487280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220487280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (389787552).

220487280 is an abundant number, since it is smaller than the sum of its proper divisors (559087824).

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

220487280 is a wasteful number, since it uses less digits than its factorization.

220487280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4203 (or 4197 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 220487280 is about 14848.8140940615. The cubic root of 220487280 is about 604.1264445888.

The spelling of 220487280 in words is "two hundred twenty million, four hundred eighty-seven thousand, two hundred eighty".