16224516 has 96 divisors (see below), whose sum is σ = 52469760. Its totient is φ = 4212000.

The previous prime is 16224493. The next prime is 16224521. The reversal of 16224516 is 61542261.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 16224516.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7341 + ... + 9291.

It is an arithmetic number, because the mean of its divisors is an integer number (546560).

Almost surely, 2^16224516 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 16224516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26234880).

16224516 is an abundant number, since it is smaller than the sum of its proper divisors (36245244).

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

16224516 is a wasteful number, since it uses less digits than its factorization.

16224516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982 (or 1974 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 16224516 is about 4027.9667327325. The cubic root of 16224516 is about 253.1573747343.

Adding to 16224516 its reverse (61542261), we get a palindrome (77766777).

It can be divided in two parts, 162245 and 16, that added together give a palindrome (162261).

The spelling of 16224516 in words is "sixteen million, two hundred twenty-four thousand, five hundred sixteen".