16291427 has 4 divisors (see below), whose sum is σ = 16332456. Its totient is φ = 16250400.

The previous prime is 16291421. The next prime is 16291439. The reversal of 16291427 is 72419261.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72419261 = 61 ⋅1187201.

It is a cyclic number.

It is not a de Polignac number, because 16291427 - 2⁴ = 16291411 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 16291393 and 16291402.

It is not an unprimeable number, because it can be changed into a prime (16291421) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 19913 + ... + 20714.

It is an arithmetic number, because the mean of its divisors is an integer number (4083114).

Almost surely, 2^16291427 is an apocalyptic number.

16291427 is a deficient number, since it is larger than the sum of its proper divisors (41029).

16291427 is an equidigital number, since it uses as much as digits as its factorization.

16291427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41028.

The product of its digits is 6048, while the sum is 32.

The square root of 16291427 is about 4036.2639903753. The cubic root of 16291427 is about 253.5049101230.

The spelling of 16291427 in words is "sixteen million, two hundred ninety-one thousand, four hundred twenty-seven".