13047318 has 40 divisors (see below), whose sum is σ = 29931528. Its totient is φ = 4245696.

The previous prime is 13047299. The next prime is 13047329. The reversal of 13047318 is 81374031.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13047291 and 13047300.

It is a congruent number.

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 19 ways as a sum of consecutive naturals, for example, 6030 + ... + 7902.

Almost surely, 2^13047318 is an apocalyptic number.

13047318 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13047318, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14965764).

13047318 is an abundant number, since it is smaller than the sum of its proper divisors (16884210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13047318 is a wasteful number, since it uses less digits than its factorization.

13047318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1930 (or 1921 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 13047318 is about 3612.1071412681. The cubic root of 13047318 is about 235.4184065586.

The spelling of 13047318 in words is "thirteen million, forty-seven thousand, three hundred eighteen".