16442247 has 8 divisors (see below), whose sum is σ = 23212656. Its totient is φ = 10316672.

The previous prime is 16442197. The next prime is 16442287. The reversal of 16442247 is 74224461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16442247 - 2⁸ = 16441991 is a prime.

It is a super-3 number, since 3×16442247³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16442287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161148 + ... + 161249.

It is an arithmetic number, because the mean of its divisors is an integer number (2901582).

Almost surely, 2^16442247 is an apocalyptic number.

16442247 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

16442247 is a deficient number, since it is larger than the sum of its proper divisors (6770409).

16442247 is a wasteful number, since it uses less digits than its factorization.

16442247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322417.

The product of its digits is 10752, while the sum is 30.

The square root of 16442247 is about 4054.9040679158. The cubic root of 16442247 is about 254.2847932978.

The spelling of 16442247 in words is "sixteen million, four hundred forty-two thousand, two hundred forty-seven".