13941840 has 80 divisors (see below), whose sum is σ = 47157696. Its totient is φ = 3379200.

The previous prime is 13941833. The next prime is 13941857. The reversal of 13941840 is 4814931.

It is a happy number.

13941840 is a nontrivial binomial coefficient, being equal to C(5281, 2).

It is a tau number, because it is divible by the number of its divisors (80).

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 = 13941798 and 13941807.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1 + ... + 5280.

Almost surely, 2^13941840 is an apocalyptic number.

13941840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13941840 is the 5280-th triangular number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13941840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23578848).

13941840 is an abundant number, since it is smaller than the sum of its proper divisors (33215856).

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

13941840 is a wasteful number, since it uses less digits than its factorization.

13941840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5308 (or 5302 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 13941840 is about 3733.8773413169. The cubic root of 13941840 is about 240.6800158681.

The spelling of 13941840 in words is "thirteen million, nine hundred forty-one thousand, eight hundred forty".