13981184 has 80 divisors (see below), whose sum is σ = 32997888. Its totient is φ = 5793792.

The previous prime is 13981147. The next prime is 13981193. The reversal of 13981184 is 48118931.

13981184 = 41³ + 42³ + ... + 87³.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168407 + ... + 168489.

Almost surely, 2^13981184 is an apocalyptic number.

13981184 is a gapful number since it is divisible by the number (14) 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 13981184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16498944).

13981184 is an abundant number, since it is smaller than the sum of its proper divisors (19016704).

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

13981184 is an frugal number, since it uses more digits than its factorization.

13981184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 139 counting only the distinct ones).

The product of its digits is 6912, while the sum is 35.

The square root of 13981184 is about 3739.1421476055. The cubic root of 13981184 is about 240.9062036354.

The spelling of 13981184 in words is "thirteen million, nine hundred eighty-one thousand, one hundred eighty-four".