16332220 has 36 divisors (see below), whose sum is σ = 35557704. Its totient is φ = 6301120.

The previous prime is 16332209. The next prime is 16332241. The reversal of 16332220 is 2223361.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16335 + ... + 17305.

It is an arithmetic number, because the mean of its divisors is an integer number (987714).

Almost surely, 2^16332220 is an apocalyptic number.

16332220 is a gapful number since it is divisible by the number (10) 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 16332220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17778852).

16332220 is an abundant number, since it is smaller than the sum of its proper divisors (19225484).

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

16332220 is a wasteful number, since it uses less digits than its factorization.

16332220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038 (or 1007 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 16332220 is about 4041.3141427016. The cubic root of 16332220 is about 253.7163220610.

Adding to 16332220 its reverse (2223361), we get a palindrome (18555581).

The spelling of 16332220 in words is "sixteen million, three hundred thirty-two thousand, two hundred twenty".