16289386 has 4 divisors (see below), whose sum is σ = 24434082. Its totient is φ = 8144692.

The previous prime is 16289363. The next prime is 16289407. The reversal of 16289386 is 68398261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68398261 = 5261 ⋅13001.

It can be written as a sum of positive squares in only one way, i.e., 11799225 + 4490161 = 3435^2 + 2119^2 .

It is a super-3 number, since 3×16289386³ (a number of 23 digits) contains 333 as substring.

It is a plaindrome in base 12.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4072345 + ... + 4072348.

Almost surely, 2^16289386 is an apocalyptic number.

16289386 is a deficient number, since it is larger than the sum of its proper divisors (8144696).

16289386 is an equidigital number, since it uses as much as digits as its factorization.

16289386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8144695.

The product of its digits is 124416, while the sum is 43.

The square root of 16289386 is about 4036.0111496377. The cubic root of 16289386 is about 253.4943232639.

The spelling of 16289386 in words is "sixteen million, two hundred eighty-nine thousand, three hundred eighty-six".