220081040 has 40 divisors (see below), whose sum is σ = 513984960. Its totient is φ = 87637376.

The previous prime is 220081021. The next prime is 220081049. The reversal of 220081040 is 40180022.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (220081049) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 12101 + ... + 24219.

It is an arithmetic number, because the mean of its divisors is an integer number (12849624).

Almost surely, 2^220081040 is an apocalyptic number.

220081040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220081040 is an abundant number, since it is smaller than the sum of its proper divisors (293903920).

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

220081040 is a wasteful number, since it uses less digits than its factorization.

220081040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12359 (or 12353 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 220081040 is about 14835.1285805011. The cubic root of 220081040 is about 603.7551892985.

The spelling of 220081040 in words is "two hundred twenty million, eighty-one thousand, forty".