13338478 has 4 divisors (see below), whose sum is σ = 20007720. Its totient is φ = 6669238.

The previous prime is 13338469. The next prime is 13338499. The reversal of 13338478 is 87483331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87483331 = 13 ⋅6729487.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3334618 + ... + 3334621.

It is an arithmetic number, because the mean of its divisors is an integer number (5001930).

Almost surely, 2^13338478 is an apocalyptic number.

13338478 is a deficient number, since it is larger than the sum of its proper divisors (6669242).

13338478 is an equidigital number, since it uses as much as digits as its factorization.

13338478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6669241.

The product of its digits is 48384, while the sum is 37.

The square root of 13338478 is about 3652.1881112560. The cubic root of 13338478 is about 237.1567147616.

The spelling of 13338478 in words is "thirteen million, three hundred thirty-eight thousand, four hundred seventy-eight".