16332216 has 16 divisors (see below), whose sum is σ = 40830600. Its totient is φ = 5444064.

The previous prime is 16332209. The next prime is 16332241. The reversal of 16332216 is 61223361.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 680509 = 16332216 / (1 + 6 + 3 + 3 + 2 + 2 + 1 + 6).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340231 + ... + 340278.

Almost surely, 2^16332216 is an apocalyptic number.

It is an amenable number.

16332216 is an abundant number, since it is smaller than the sum of its proper divisors (24498384).

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

16332216 is a wasteful number, since it uses less digits than its factorization.

16332216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680518 (or 680514 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

The square root of 16332216 is about 4041.3136478130. The cubic root of 16332216 is about 253.7163013481.

Adding to 16332216 its reverse (61223361), we get a palindrome (77555577).

The spelling of 16332216 in words is "sixteen million, three hundred thirty-two thousand, two hundred sixteen".