220402980 has 108 divisors (see below), whose sum is σ = 777738780. Its totient is φ = 50375808.

The previous prime is 220402967. The next prime is 220403017. The reversal of 220402980 is 89204022.

It can be written as a sum of positive squares in 2 ways, for example, as 170615844 + 49787136 = 13062^2 + 7056^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3675 + ... + 21314.

It is an arithmetic number, because the mean of its divisors is an integer number (7201285).

Almost surely, 2^220402980 is an apocalyptic number.

220402980 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 220402980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (388869390).

220402980 is an abundant number, since it is smaller than the sum of its proper divisors (557335800).

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

220402980 is a wasteful number, since it uses less digits than its factorization.

220402980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25018 (or 25006 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 220402980 is about 14845.9752121577. The cubic root of 220402980 is about 604.0494418834.

The spelling of 220402980 in words is "two hundred twenty million, four hundred two thousand, nine hundred eighty".