16323216 has 160 divisors (see below), whose sum is σ = 53829888. Its totient is φ = 4147200.

The previous prime is 16323211. The next prime is 16323239. The reversal of 16323216 is 61232361.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

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

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (16323211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161566 + ... + 161666.

Almost surely, 2^16323216 is an apocalyptic number.

16323216 is a gapful number since it is divisible by the number (16) 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 16323216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26914944).

16323216 is an abundant number, since it is smaller than the sum of its proper divisors (37506672).

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

16323216 is a wasteful number, since it uses less digits than its factorization.

16323216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 163 counting only the distinct ones).

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

The square root of 16323216 is about 4040.1999950498. The cubic root of 16323216 is about 253.6696886435.

Adding to 16323216 its reverse (61232361), we get a palindrome (77555577).

The spelling of 16323216 in words is "sixteen million, three hundred twenty-three thousand, two hundred sixteen".