13281912 has 144 divisors (see below), whose sum is σ = 43982640. Its totient is φ = 3545856.

The previous prime is 13281911. The next prime is 13281941. The reversal of 13281912 is 21918231.

13281912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13281911) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 181908 + ... + 181980.

It is an arithmetic number, because the mean of its divisors is an integer number (305435).

Almost surely, 2^13281912 is an apocalyptic number.

13281912 is a gapful number since it is divisible by the number (12) 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 13281912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21991320).

13281912 is an abundant number, since it is smaller than the sum of its proper divisors (30700728).

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

13281912 is a wasteful number, since it uses less digits than its factorization.

13281912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 104 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 13281912 is about 3644.4357587972. The cubic root of 13281912 is about 236.8209939233.

It can be divided in two parts, 1328 and 1912, that added together give a triangular number (3240 = T₈₀).

The spelling of 13281912 in words is "thirteen million, two hundred eighty-one thousand, nine hundred twelve".