13266018 has 40 divisors (see below), whose sum is σ = 31480812. Its totient is φ = 4161024.

The previous prime is 13266007. The next prime is 13266023. The reversal of 13266018 is 81066231.

It can be written as a sum of positive squares in 2 ways, for example, as 13155129 + 110889 = 3627^2 + 333^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 13265982 and 13266000.

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, 346 + ... + 5162.

Almost surely, 2^13266018 is an apocalyptic number.

13266018 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 13266018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15740406).

13266018 is an abundant number, since it is smaller than the sum of its proper divisors (18214794).

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

13266018 is a wasteful number, since it uses less digits than its factorization.

13266018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4848 (or 4839 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 13266018 is about 3642.2545215841. The cubic root of 13266018 is about 236.7264910810.

The spelling of 13266018 in words is "thirteen million, two hundred sixty-six thousand, eighteen".