16442287 has 2 divisors, whose sum is σ = 16442288. Its totient is φ = 16442286.

The previous prime is 16442197. The next prime is 16442311. The reversal of 16442287 is 78224461.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16442287 is a prime.

It is a super-3 number, since 3×16442287³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16440287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8221143 + 8221144.

It is an arithmetic number, because the mean of its divisors is an integer number (8221144).

Almost surely, 2^16442287 is an apocalyptic number.

16442287 is a deficient number, since it is larger than the sum of its proper divisors (1).

16442287 is an equidigital number, since it uses as much as digits as its factorization.

16442287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 34.

The square root of 16442287 is about 4054.9090002120. The cubic root of 16442287 is about 254.2849995020.

The spelling of 16442287 in words is "sixteen million, four hundred forty-two thousand, two hundred eighty-seven".