16278243 has 8 divisors (see below), whose sum is σ = 21723408. Its totient is φ = 10842624.

The previous prime is 16278239. The next prime is 16278259. The reversal of 16278243 is 34287261.

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

It is not a de Polignac number, because 16278243 - 2² = 16278239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16278233) 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 7 ways as a sum of consecutive naturals, for example, 4171 + ... + 7067.

It is an arithmetic number, because the mean of its divisors is an integer number (2715426).

Almost surely, 2^16278243 is an apocalyptic number.

16278243 is a deficient number, since it is larger than the sum of its proper divisors (5445165).

16278243 is a wasteful number, since it uses less digits than its factorization.

16278243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4773.

The product of its digits is 16128, while the sum is 33.

The square root of 16278243 is about 4034.6304663500. The cubic root of 16278243 is about 253.4365078746.

It can be divided in two parts, 1627 and 8243, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 16278243 in words is "sixteen million, two hundred seventy-eight thousand, two hundred forty-three".