13266840 has 32 divisors (see below), whose sum is σ = 39800880. Its totient is φ = 3537792.

The previous prime is 13266839. The next prime is 13266889. The reversal of 13266840 is 4866231.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 13266798 and 13266807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55159 + ... + 55398.

Almost surely, 2^13266840 is an apocalyptic number.

13266840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13266840 is an abundant number, since it is smaller than the sum of its proper divisors (26534040).

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

13266840 is a wasteful number, since it uses less digits than its factorization.

13266840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110571 (or 110567 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 13266840 is about 3642.3673620326. The cubic root of 13266840 is about 236.7313803944.

The spelling of 13266840 in words is "thirteen million, two hundred sixty-six thousand, eight hundred forty".