14278861 has 8 divisors (see below), whose sum is σ = 15914880. Its totient is φ = 12731328.

The previous prime is 14278853. The next prime is 14278867. The reversal of 14278861 is 16887241.

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 14278861 - 2³ = 14278853 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 14278861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14278867) 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, 21781 + ... + 22426.

It is an arithmetic number, because the mean of its divisors is an integer number (1989360).

Almost surely, 2^14278861 is an apocalyptic number.

It is an amenable number.

14278861 is a deficient number, since it is larger than the sum of its proper divisors (1636019).

14278861 is a wasteful number, since it uses less digits than its factorization.

14278861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44243.

The product of its digits is 21504, while the sum is 37.

The square root of 14278861 is about 3778.7380168517. The cubic root of 14278861 is about 242.6039431117.

It can be divided in two parts, 142 and 78861, that added together give a triangular number (79003 = T₃₉₇).

The spelling of 14278861 in words is "fourteen million, two hundred seventy-eight thousand, eight hundred sixty-one".