332321220 has 144 divisors (see below), whose sum is σ = 1256830848. Its totient is φ = 69050880.

The previous prime is 332321201. The next prime is 332321261. The reversal of 332321220 is 22123233.

It is a happy number.

It is a super-2 number, since 2×332321220² = 220874786524576800, which contains 22 as substring.

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 = 332321193 and 332321202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1872 + ... + 25848.

It is an arithmetic number, because the mean of its divisors is an integer number (8727992).

Almost surely, 2^332321220 is an apocalyptic number.

332321220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 332321220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (628415424).

332321220 is an abundant number, since it is smaller than the sum of its proper divisors (924509628).

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

332321220 is a wasteful number, since it uses less digits than its factorization.

332321220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24010 (or 24005 counting only the distinct ones).

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

The square root of 332321220 is about 18229.6796461156. The cubic root of 332321220 is about 692.6588026987.

Adding to 332321220 its reverse (22123233), we get a palindrome (354444453).

The spelling of 332321220 in words is "three hundred thirty-two million, three hundred twenty-one thousand, two hundred twenty".