13784880 has 80 divisors (see below), whose sum is σ = 44997120. Its totient is φ = 3481344.

The previous prime is 13784873. The next prime is 13784891. The reversal of 13784880 is 8848731.

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

It is a super-2 number, since 2×13784880² = 380045833228800, which contains 22 as substring.

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, 3049 + ... + 6071.

It is an arithmetic number, because the mean of its divisors is an integer number (562464).

Almost surely, 2^13784880 is an apocalyptic number.

13784880 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 13784880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22498560).

13784880 is an abundant number, since it is smaller than the sum of its proper divisors (31212240).

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

13784880 is a wasteful number, since it uses less digits than its factorization.

13784880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3058 (or 3052 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 13784880 is about 3712.7994828700. The cubic root of 13784880 is about 239.7733972250.

The spelling of 13784880 in words is "thirteen million, seven hundred eighty-four thousand, eight hundred eighty".