220018032 has 140 divisors (see below), whose sum is σ = 688773624. Its totient is φ = 67651200.

The previous prime is 220018031. The next prime is 220018049. The reversal of 220018032 is 230810022.

It is a happy number.

220018032 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 220017996 and 220018014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220018031) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 150907 + ... + 152357.

Almost surely, 2^220018032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220018032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344386812).

220018032 is an abundant number, since it is smaller than the sum of its proper divisors (468755592).

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

220018032 is a wasteful number, since it uses less digits than its factorization.

220018032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490 (or 1469 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 220018032 is about 14833.0048203323. The cubic root of 220018032 is about 603.6975665278.

Adding to 220018032 its reverse (230810022), we get a palindrome (450828054).

The spelling of 220018032 in words is "two hundred twenty million, eighteen thousand, thirty-two".