16220316 has 48 divisors (see below), whose sum is σ = 44656640. Its totient is φ = 4484160.

The previous prime is 16220287. The next prime is 16220371. The reversal of 16220316 is 61302261.

It is a happy number.

16220316 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16220316² = 526197302279712, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 16220292 and 16220301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 511 + ... + 5718.

Almost surely, 2^16220316 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 16220316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22328320).

16220316 is an abundant number, since it is smaller than the sum of its proper divisors (28436324).

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

16220316 is a wasteful number, since it uses less digits than its factorization.

16220316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6274 (or 6272 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 16220316 is about 4027.4453441357. The cubic root of 16220316 is about 253.1355281096.

Adding to 16220316 its reverse (61302261), we get a palindrome (77522577).

The spelling of 16220316 in words is "sixteen million, two hundred twenty thousand, three hundred sixteen".