14275978 has 4 divisors (see below), whose sum is σ = 21413970. Its totient is φ = 7137988.

The previous prime is 14275951. The next prime is 14275979. The reversal of 14275978 is 87957241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87957241 = 193 ⋅455737.

It can be written as a sum of positive squares in only one way, i.e., 14085009 + 190969 = 3753^2 + 437^2 .

It is a super-3 number, since 3×14275978³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (14275979) 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 as a sum of consecutive naturals, namely, 3568993 + ... + 3568996.

Almost surely, 2^14275978 is an apocalyptic number.

14275978 is a deficient number, since it is larger than the sum of its proper divisors (7137992).

14275978 is an equidigital number, since it uses as much as digits as its factorization.

14275978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7137991.

The product of its digits is 141120, while the sum is 43.

The square root of 14275978 is about 3778.3565210287. The cubic root of 14275978 is about 242.5876142125.

The spelling of 14275978 in words is "fourteen million, two hundred seventy-five thousand, nine hundred seventy-eight".