13436840 has 32 divisors (see below), whose sum is σ = 30365280. Its totient is φ = 5351232.

The previous prime is 13436833. The next prime is 13436861. The reversal of 13436840 is 4863431.

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 7 ways as a sum of consecutive naturals, for example, 10727 + ... + 11913.

It is an arithmetic number, because the mean of its divisors is an integer number (948915).

Almost surely, 2^13436840 is an apocalyptic number.

13436840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13436840 is an abundant number, since it is smaller than the sum of its proper divisors (16928440).

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

13436840 is a wasteful number, since it uses less digits than its factorization.

13436840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481 (or 1477 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 13436840 is about 3665.6295502956. The cubic root of 13436840 is about 237.7382429264.

The spelling of 13436840 in words is "thirteen million, four hundred thirty-six thousand, eight hundred forty".