13711440 has 40 divisors (see below), whose sum is σ = 42506208. Its totient is φ = 3656320.

The previous prime is 13711433. The next prime is 13711441. The reversal of 13711440 is 4411731.

13711440 is nontrivially palindromic in base 13.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×13711440³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13711441) 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, 28326 + ... + 28805.

Almost surely, 2^13711440 is an apocalyptic number.

13711440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13711440 is an abundant number, since it is smaller than the sum of its proper divisors (28794768).

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

13711440 is a wasteful number, since it uses less digits than its factorization.

13711440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57147 (or 57141 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 13711440 is about 3702.8961638156. The cubic root of 13711440 is about 239.3468351222.

The spelling of 13711440 in words is "thirteen million, seven hundred eleven thousand, four hundred forty".