14278381 has 8 divisors (see below), whose sum is σ = 15572480. Its totient is φ = 13012272.

The previous prime is 14278361. The next prime is 14278387. The reversal of 14278381 is 18387241.

It is a happy number.

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

It is not a de Polignac number, because 14278381 - 2⁵ = 14278349 is a prime.

It is a super-2 number, since 2×14278381² = 407744327962322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14278387) 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 in 7 ways as a sum of consecutive naturals, for example, 5925 + ... + 7978.

It is an arithmetic number, because the mean of its divisors is an integer number (1946560).

Almost surely, 2^14278381 is an apocalyptic number.

It is an amenable number.

14278381 is a deficient number, since it is larger than the sum of its proper divisors (1294099).

14278381 is a wasteful number, since it uses less digits than its factorization.

14278381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13995.

The product of its digits is 10752, while the sum is 34.

The square root of 14278381 is about 3778.6745030500. The cubic root of 14278381 is about 242.6012246130.

The spelling of 14278381 in words is "fourteen million, two hundred seventy-eight thousand, three hundred eighty-one".