16380306 has 20 divisors (see below), whose sum is σ = 36704382. Its totient is φ = 5460048.

The previous prime is 16380289. The next prime is 16380313. The reversal of 16380306 is 60308361.

It can be written as a sum of positive squares in only one way, i.e., 16329681 + 50625 = 4041^2 + 225^2 .

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 16380306.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 50395 + ... + 50718.

Almost surely, 2^16380306 is an apocalyptic number.

16380306 is an abundant number, since it is smaller than the sum of its proper divisors (20324076).

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

16380306 is a wasteful number, since it uses less digits than its factorization.

16380306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101127 (or 101118 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 16380306 is about 4047.2590725082. The cubic root of 16380306 is about 253.9650787959.

Adding to 16380306 its reverse (60308361), we get a palindrome (76688667).

The spelling of 16380306 in words is "sixteen million, three hundred eighty thousand, three hundred six".