220332464 has 40 divisors (see below), whose sum is σ = 471344832. Its totient is φ = 98937920.

The previous prime is 220332457. The next prime is 220332499. The reversal of 220332464 is 464233022.

220332464 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×220332464² = 97092789384622592, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7067 + ... + 22149.

Almost surely, 2^220332464 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 220332464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235672416).

220332464 is an abundant number, since it is smaller than the sum of its proper divisors (251012368).

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

220332464 is a wasteful number, since it uses less digits than its factorization.

220332464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15185 (or 15179 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 220332464 is about 14843.6001024010. The cubic root of 220332464 is about 603.9850149053.

Adding to 220332464 its reverse (464233022), we get a palindrome (684565486).

The spelling of 220332464 in words is "two hundred twenty million, three hundred thirty-two thousand, four hundred sixty-four".