220655460 has 24 divisors (see below), whose sum is σ = 617835456. Its totient is φ = 58841440.

The previous prime is 220655437. The next prime is 220655473. The reversal of 220655460 is 64556022.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1838736 + ... + 1838855.

It is an arithmetic number, because the mean of its divisors is an integer number (25743144).

Almost surely, 2^220655460 is an apocalyptic number.

220655460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220655460 is an abundant number, since it is smaller than the sum of its proper divisors (397179996).

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

220655460 is a wasteful number, since it uses less digits than its factorization.

220655460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3677603 (or 3677601 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 220655460 is about 14854.4760930839. The cubic root of 220655460 is about 604.2800077385.

The spelling of 220655460 in words is "two hundred twenty million, six hundred fifty-five thousand, four hundred sixty".