220089636 has 60 divisors (see below), whose sum is σ = 619627932. Its totient is φ = 67718592.

The previous prime is 220089631. The next prime is 220089637. The reversal of 220089636 is 636980022.

It can be written as a sum of positive squares in 2 ways, for example, as 49787136 + 170302500 = 7056^2 + 13050^2 .

It is a super-2 number, since 2×220089636² = 96878895749224992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 220089636.

It is not an unprimeable number, because it can be changed into a prime (220089631) 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 19 ways as a sum of consecutive naturals, for example, 21915 + ... + 30338.

Almost surely, 2^220089636 is an apocalyptic number.

220089636 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

220089636 is an abundant number, since it is smaller than the sum of its proper divisors (399538296).

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

220089636 is a wasteful number, since it uses less digits than its factorization.

220089636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52282 (or 52271 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 220089636 is about 14835.4182954172. The cubic root of 220089636 is about 603.7630497546.

The spelling of 220089636 in words is "two hundred twenty million, eighty-nine thousand, six hundred thirty-six".