16386444 has 36 divisors (see below), whose sum is σ = 41565160. Its totient is φ = 5443200.

The previous prime is 16386443. The next prime is 16386451. The reversal of 16386444 is 44468361.

16386444 is a `hidden beast` number, since 1 + 6 + 3 + 8 + 644 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 16386399 and 16386408.

It is not an unprimeable number, because it can be changed into a prime (16386443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13044 + ... + 14244.

Almost surely, 2^16386444 is an apocalyptic number.

It is an amenable number.

16386444 is an abundant number, since it is smaller than the sum of its proper divisors (25178716).

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

16386444 is a wasteful number, since it uses less digits than its factorization.

16386444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590 (or 1585 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 16386444 is about 4048.0172924532. The cubic root of 16386444 is about 253.9967966199.

The spelling of 16386444 in words is "sixteen million, three hundred eighty-six thousand, four hundred forty-four".