16391127 has 16 divisors (see below), whose sum is σ = 22740608. Its totient is φ = 10493280.

The previous prime is 16391107. The next prime is 16391143. The reversal of 16391127 is 72119361.

It is a de Polignac number, because none of the positive numbers 2^k-16391127 is a prime.

It is a Smith number, since the sum of its digits (30) 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 junction number, because it is equal to n+sod(n) for n = 16391094 and 16391103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16391107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6828 + ... + 8910.

It is an arithmetic number, because the mean of its divisors is an integer number (1421288).

Almost surely, 2^16391127 is an apocalyptic number.

16391127 is a deficient number, since it is larger than the sum of its proper divisors (6349481).

16391127 is a wasteful number, since it uses less digits than its factorization.

16391127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190.

The product of its digits is 2268, while the sum is 30.

The square root of 16391127 is about 4048.5956824558. The cubic root of 16391127 is about 254.0209904740.

The spelling of 16391127 in words is "sixteen million, three hundred ninety-one thousand, one hundred twenty-seven".