13814978 has 16 divisors (see below), whose sum is σ = 21091200. Its totient is φ = 6785856.

The previous prime is 13814963. The next prime is 13814989. The reversal of 13814978 is 87941831.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 40826 + ... + 41162.

It is an arithmetic number, because the mean of its divisors is an integer number (1318200).

Almost surely, 2^13814978 is an apocalyptic number.

13814978 is a deficient number, since it is larger than the sum of its proper divisors (7276222).

13814978 is a wasteful number, since it uses less digits than its factorization.

13814978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641.

The product of its digits is 48384, while the sum is 41.

The square root of 13814978 is about 3716.8505485155. The cubic root of 13814978 is about 239.9477779896.

The spelling of 13814978 in words is "thirteen million, eight hundred fourteen thousand, nine hundred seventy-eight".