220332132 has 72 divisors (see below), whose sum is σ = 593480160. Its totient is φ = 68722560.

The previous prime is 220332131. The next prime is 220332139. The reversal of 220332132 is 231233022.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (220332131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54832 + ... + 58712.

It is an arithmetic number, because the mean of its divisors is an integer number (8242780).

Almost surely, 2^220332132 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 220332132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296740080).

220332132 is an abundant number, since it is smaller than the sum of its proper divisors (373148028).

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

220332132 is a wasteful number, since it uses less digits than its factorization.

220332132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3993 (or 3988 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 220332132 is about 14843.5889191260. The cubic root of 220332132 is about 603.9847115409.

Adding to 220332132 its reverse (231233022), we get a palindrome (451565154).

The spelling of 220332132 in words is "two hundred twenty million, three hundred thirty-two thousand, one hundred thirty-two".