16223616 has 48 divisors (see below), whose sum is σ = 46688460. Its totient is φ = 5407488.

The previous prime is 16223611. The next prime is 16223617. The reversal of 16223616 is 61632261.

16223616 is a `hidden beast` number, since 1 + 622 + 36 + 1 + 6 = 666.

16223616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×16223616² = 526411432230912, which contains 22 as substring.

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

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 16223616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16223611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5890 + ... + 8193.

Almost surely, 2^16223616 is an apocalyptic number.

16223616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16223616 is an abundant number, since it is smaller than the sum of its proper divisors (30464844).

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

16223616 is a wasteful number, since it uses less digits than its factorization.

16223616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14103 (or 14088 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 16223616 is about 4027.8550122863. The cubic root of 16223616 is about 253.1526936321.

Adding to 16223616 its reverse (61632261), we get a palindrome (77855877).

The spelling of 16223616 in words is "sixteen million, two hundred twenty-three thousand, six hundred sixteen".