220043388 has 12 divisors (see below), whose sum is σ = 513434600. Its totient is φ = 73347792.

The previous prime is 220043381. The next prime is 220043399. The reversal of 220043388 is 883340022.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220043381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9168463 + ... + 9168486.

Almost surely, 2^220043388 is an apocalyptic number.

It is an amenable number.

220043388 is an abundant number, since it is smaller than the sum of its proper divisors (293391212).

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

220043388 is a wasteful number, since it uses less digits than its factorization.

220043388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18336956 (or 18336954 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 220043388 is about 14833.8595112668. The cubic root of 220043388 is about 603.7207566991.

The spelling of 220043388 in words is "two hundred twenty million, forty-three thousand, three hundred eighty-eight".