13281450 has 144 divisors (see below), whose sum is σ = 41559840. Its totient is φ = 2782080.

The previous prime is 13281427. The next prime is 13281451. The reversal of 13281450 is 5418231.

It is a self number, because there is not a number n which added to its sum of digits gives 13281450.

It is not an unprimeable number, because it can be changed into a prime (13281451) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 95481 + ... + 95619.

It is an arithmetic number, because the mean of its divisors is an integer number (288610).

Almost surely, 2^13281450 is an apocalyptic number.

13281450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13281450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20779920).

13281450 is an abundant number, since it is smaller than the sum of its proper divisors (28278390).

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

13281450 is a wasteful number, since it uses less digits than its factorization.

13281450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 13281450 is about 3644.3723739486. The cubic root of 13281450 is about 236.8182480193.

Adding to 13281450 its reverse (5418231), we get a palindrome (18699681).

It can be divided in two parts, 13281 and 450, that added together give a palindrome (13731).

The spelling of 13281450 in words is "thirteen million, two hundred eighty-one thousand, four hundred fifty".