13994578 has 32 divisors (see below), whose sum is σ = 23708160. Its totient is φ = 6151680.

The previous prime is 13994573. The next prime is 13994593. The reversal of 13994578 is 87549931.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13994573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78093 + ... + 78271.

It is an arithmetic number, because the mean of its divisors is an integer number (740880).

Almost surely, 2^13994578 is an apocalyptic number.

13994578 is a deficient number, since it is larger than the sum of its proper divisors (9713582).

13994578 is a wasteful number, since it uses less digits than its factorization.

13994578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322.

The product of its digits is 272160, while the sum is 46.

The square root of 13994578 is about 3740.9327713820. The cubic root of 13994578 is about 240.9831086111.

The spelling of 13994578 in words is "thirteen million, nine hundred ninety-four thousand, five hundred seventy-eight".