13880387 has 4 divisors (see below), whose sum is σ = 14007840. Its totient is φ = 13752936.

The previous prime is 13880371. The next prime is 13880407. The reversal of 13880387 is 78308831.

13880387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13880387 - 2⁴ = 13880371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13880387.

It is not an unprimeable number, because it can be changed into a prime (13880327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63563 + ... + 63780.

It is an arithmetic number, because the mean of its divisors is an integer number (3501960).

Almost surely, 2^13880387 is an apocalyptic number.

13880387 is a deficient number, since it is larger than the sum of its proper divisors (127453).

13880387 is a wasteful number, since it uses less digits than its factorization.

13880387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127452.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 13880387 is about 3725.6391397987. The cubic root of 13880387 is about 240.3258709909.

The spelling of 13880387 in words is "thirteen million, eight hundred eighty thousand, three hundred eighty-seven".