16427911 has 4 divisors (see below), whose sum is σ = 17142192. Its totient is φ = 15713632.

The previous prime is 16427897. The next prime is 16427981. The reversal of 16427911 is 11972461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16427911 - 2¹³ = 16419719 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16427981) 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, 357106 + ... + 357151.

It is an arithmetic number, because the mean of its divisors is an integer number (4285548).

Almost surely, 2^16427911 is an apocalyptic number.

16427911 is a deficient number, since it is larger than the sum of its proper divisors (714281).

16427911 is an equidigital number, since it uses as much as digits as its factorization.

16427911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714280.

The product of its digits is 3024, while the sum is 31.

The square root of 16427911 is about 4053.1359464000. The cubic root of 16427911 is about 254.2108681464.

The spelling of 16427911 in words is "sixteen million, four hundred twenty-seven thousand, nine hundred eleven".