15616116 has 18 divisors (see below), whose sum is σ = 39474162. Its totient is φ = 5205360.

The previous prime is 15616099. The next prime is 15616129. The reversal of 15616116 is 61161651.

15616116 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10112400 + 5503716 = 3180^2 + 2346^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 15616116.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 216855 + ... + 216926.

It is an arithmetic number, because the mean of its divisors is an integer number (2193009).

Almost surely, 2^15616116 is an apocalyptic number.

It is an amenable number.

15616116 is an abundant number, since it is smaller than the sum of its proper divisors (23858046).

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

15616116 is a wasteful number, since it uses less digits than its factorization.

15616116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433791 (or 433786 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 15616116 is about 3951.7231684418. The cubic root of 15616116 is about 249.9526096839.

Adding to 15616116 its reverse (61161651), we get a palindrome (76777767).

The spelling of 15616116 in words is "fifteen million, six hundred sixteen thousand, one hundred sixteen".