16303986 has 24 divisors (see below), whose sum is σ = 37403964. Its totient is φ = 5114880.

The previous prime is 16303949. The next prime is 16304017. The reversal of 16303986 is 68930361.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15848361 + 455625 = 3981^2 + 675^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16303986.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26335 + ... + 26946.

Almost surely, 2^16303986 is an apocalyptic number.

16303986 is an abundant number, since it is smaller than the sum of its proper divisors (21099978).

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

16303986 is a wasteful number, since it uses less digits than its factorization.

16303986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53306 (or 53303 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 16303986 is about 4037.8194610458. The cubic root of 16303986 is about 253.5700353859.

The spelling of 16303986 in words is "sixteen million, three hundred three thousand, nine hundred eighty-six".