13386840 has 64 divisors (see below), whose sum is σ = 40404960. Its totient is φ = 3548160.

The previous prime is 13386839. The next prime is 13386847. The reversal of 13386840 is 4868331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13386847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33522 + ... + 33918.

Almost surely, 2^13386840 is an apocalyptic number.

13386840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13386840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20202480).

13386840 is an abundant number, since it is smaller than the sum of its proper divisors (27018120).

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

13386840 is a wasteful number, since it uses less digits than its factorization.

13386840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692 (or 688 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 13386840 is about 3658.8030829767. The cubic root of 13386840 is about 237.4429927812.

The spelling of 13386840 in words is "thirteen million, three hundred eighty-six thousand, eight hundred forty".