14427778 has 8 divisors (see below), whose sum is σ = 22102272. Its totient is φ = 7060356.

The previous prime is 14427767. The next prime is 14427779. The reversal of 14427778 is 87772441.

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

It is a self number, because there is not a number n which added to its sum of digits gives 14427778.

It is not an unprimeable number, because it can be changed into a prime (14427779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76650 + ... + 76837.

It is an arithmetic number, because the mean of its divisors is an integer number (2762784).

Almost surely, 2^14427778 is an apocalyptic number.

14427778 is a deficient number, since it is larger than the sum of its proper divisors (7674494).

14427778 is a wasteful number, since it uses less digits than its factorization.

14427778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153536.

The product of its digits is 87808, while the sum is 40.

The square root of 14427778 is about 3798.3915016754. The cubic root of 14427778 is about 243.4444158285. Note that the first 4 decimals are identical.

The spelling of 14427778 in words is "fourteen million, four hundred twenty-seven thousand, seven hundred seventy-eight".