13873940 has 12 divisors (see below), whose sum is σ = 29135316. Its totient is φ = 5549568.

The previous prime is 13873939. The next prime is 13873961. The reversal of 13873940 is 4937831.

13873940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10316944 + 3556996 = 3212^2 + 1886^2 .

It is a super-2 number, since 2×13873940² = 384972422247200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13873940.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346829 + ... + 346868.

It is an arithmetic number, because the mean of its divisors is an integer number (2427943).

Almost surely, 2^13873940 is an apocalyptic number.

13873940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13873940 is an abundant number, since it is smaller than the sum of its proper divisors (15261376).

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

13873940 is a wasteful number, since it uses less digits than its factorization.

13873940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693706 (or 693704 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 13873940 is about 3724.7738186365. The cubic root of 13873940 is about 240.2886573111.

The spelling of 13873940 in words is "thirteen million, eight hundred seventy-three thousand, nine hundred forty".