16420216 has 16 divisors (see below), whose sum is σ = 30925800. Its totient is φ = 8173344.

The previous prime is 16420189. The next prime is 16420219. The reversal of 16420216 is 61202461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16420219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2650 + ... + 6313.

Almost surely, 2^16420216 is an apocalyptic number.

It is an amenable number.

16420216 is a deficient number, since it is larger than the sum of its proper divisors (14505584).

16420216 is a wasteful number, since it uses less digits than its factorization.

16420216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9198 (or 9194 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 16420216 is about 4052.1865702359. The cubic root of 16420216 is about 254.1711702985.

Adding to 16420216 its reverse (61202461), we get a palindrome (77622677).

The spelling of 16420216 in words is "sixteen million, four hundred twenty thousand, two hundred sixteen".