13706840 has 32 divisors (see below), whose sum is σ = 35246880. Its totient is φ = 4699392.

The previous prime is 13706839. The next prime is 13706843. The reversal of 13706840 is 4860731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13706843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24197 + ... + 24756.

It is an arithmetic number, because the mean of its divisors is an integer number (1101465).

Almost surely, 2^13706840 is an apocalyptic number.

13706840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13706840 is an abundant number, since it is smaller than the sum of its proper divisors (21540040).

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

13706840 is a wasteful number, since it uses less digits than its factorization.

13706840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48971 (or 48967 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 13706840 is about 3702.2749762815. The cubic root of 13706840 is about 239.3200662687.

The spelling of 13706840 in words is "thirteen million, seven hundred six thousand, eight hundred forty".