13041440 has 24 divisors (see below), whose sum is σ = 30810780. Its totient is φ = 5216512.

The previous prime is 13041439. The next prime is 13041463. The reversal of 13041440 is 4414031.

It can be written as a sum of positive squares in 2 ways, for example, as 12931216 + 110224 = 3596^2 + 332^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40595 + ... + 40914.

Almost surely, 2^13041440 is an apocalyptic number.

13041440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13041440 is an abundant number, since it is smaller than the sum of its proper divisors (17769340).

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

13041440 is an equidigital number, since it uses as much as digits as its factorization.

13041440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81524 (or 81516 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 13041440 is about 3611.2933971086. The cubic root of 13041440 is about 235.3830481488.

Adding to 13041440 its reverse (4414031), we get a palindrome (17455471).

It can be divided in two parts, 1304 and 1440, that added together give a cube (2744 = 14³).

The spelling of 13041440 in words is "thirteen million, forty-one thousand, four hundred forty".