216416104 has 8 divisors (see below), whose sum is σ = 405780210. Its totient is φ = 108208048.

The previous prime is 216416087. The next prime is 216416107. The reversal of 216416104 is 401614612.

It can be written as a sum of positive squares in only one way, i.e., 134513604 + 81902500 = 11598^2 + 9050^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (216416107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13525999 + ... + 13526014.

Almost surely, 2^216416104 is an apocalyptic number.

It is an amenable number.

216416104 is a deficient number, since it is larger than the sum of its proper divisors (189364106).

216416104 is a wasteful number, since it uses less digits than its factorization.

216416104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27052019 (or 27052015 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 216416104 is about 14711.0877911866. The cubic root of 216416104 is about 600.3850343429.

The spelling of 216416104 in words is "two hundred sixteen million, four hundred sixteen thousand, one hundred four".