13887380 has 48 divisors (see below), whose sum is σ = 32438784. Its totient is φ = 4959360.

The previous prime is 13887359. The next prime is 13887389. The reversal of 13887380 is 8378831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13887389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7199 + ... + 8921.

It is an arithmetic number, because the mean of its divisors is an integer number (675808).

Almost surely, 2^13887380 is an apocalyptic number.

13887380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13887380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16219392).

13887380 is an abundant number, since it is smaller than the sum of its proper divisors (18551404).

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

13887380 is a wasteful number, since it uses less digits than its factorization.

13887380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776 (or 1774 counting only the distinct ones).

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

The square root of 13887380 is about 3726.5775183136. The cubic root of 13887380 is about 240.3662232919.

The spelling of 13887380 in words is "thirteen million, eight hundred eighty-seven thousand, three hundred eighty".