13190440 has 16 divisors (see below), whose sum is σ = 29678580. Its totient is φ = 5276160.

The previous prime is 13190381. The next prime is 13190459. The reversal of 13190440 is 4409131.

It can be written as a sum of positive squares in 2 ways, for example, as 11410884 + 1779556 = 3378^2 + 1334^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164841 + ... + 164920.

Almost surely, 2^13190440 is an apocalyptic number.

13190440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13190440 is an abundant number, since it is smaller than the sum of its proper divisors (16488140).

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

13190440 is a wasteful number, since it uses less digits than its factorization.

13190440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329772 (or 329768 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 13190440 is about 3631.8645349187. The cubic root of 13190440 is about 236.2760821498.

Adding to 13190440 its reverse (4409131), we get a palindrome (17599571).

The spelling of 13190440 in words is "thirteen million, one hundred ninety thousand, four hundred forty".