16220616 has 16 divisors (see below), whose sum is σ = 40551600. Its totient is φ = 5406864.

The previous prime is 16220609. The next prime is 16220621. The reversal of 16220616 is 61602261.

16220616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 675859 = 16220616 / (1 + 6 + 2 + 2 + 0 + 6 + 1 + 6).

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, 337906 + ... + 337953.

It is an arithmetic number, because the mean of its divisors is an integer number (2534475).

Almost surely, 2^16220616 is an apocalyptic number.

It is an amenable number.

16220616 is an abundant number, since it is smaller than the sum of its proper divisors (24330984).

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

16220616 is a wasteful number, since it uses less digits than its factorization.

16220616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675868 (or 675864 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 16220616 is about 4027.4825884167. The cubic root of 16220616 is about 253.1370887078.

Adding to 16220616 its reverse (61602261), we get a palindrome (77822877).

It can be divided in two parts, 16220 and 616, that added together give a triangular number (16836 = T₁₈₃).

The spelling of 16220616 in words is "sixteen million, two hundred twenty thousand, six hundred sixteen".