13270440 has 32 divisors (see below), whose sum is σ = 39811680. Its totient is φ = 3538752.

The previous prime is 13270427. The next prime is 13270441. The reversal of 13270440 is 4407231.

It is a super-2 number, since 2×13270440² = 352209155587200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13270441) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 55174 + ... + 55413.

It is an arithmetic number, because the mean of its divisors is an integer number (1244115).

Almost surely, 2^13270440 is an apocalyptic number.

13270440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13270440 is an abundant number, since it is smaller than the sum of its proper divisors (26541240).

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

13270440 is a wasteful number, since it uses less digits than its factorization.

13270440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110601 (or 110597 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 13270440 is about 3642.8615126024. The cubic root of 13270440 is about 236.7527910668.

Adding to 13270440 its reverse (4407231), we get a palindrome (17677671).

The spelling of 13270440 in words is "thirteen million, two hundred seventy thousand, four hundred forty".