13893478 has 8 divisors (see below), whose sum is σ = 20858040. Its totient is φ = 6940800.

The previous prime is 13893431. The next prime is 13893479. The reversal of 13893478 is 87439831.

It is a happy number.

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

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13893479) 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 3 ways as a sum of consecutive naturals, for example, 1033 + ... + 5371.

It is an arithmetic number, because the mean of its divisors is an integer number (2607255).

Almost surely, 2^13893478 is an apocalyptic number.

13893478 is a deficient number, since it is larger than the sum of its proper divisors (6964562).

13893478 is a wasteful number, since it uses less digits than its factorization.

13893478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5942.

The product of its digits is 145152, while the sum is 43.

The square root of 13893478 is about 3727.3956055133. The cubic root of 13893478 is about 240.4014000433.

The spelling of 13893478 in words is "thirteen million, eight hundred ninety-three thousand, four hundred seventy-eight".