13446440 has 32 divisors (see below), whose sum is σ = 34577280. Its totient is φ = 4610112.

The previous prime is 13446437. The next prime is 13446449. The reversal of 13446440 is 4464431.

13446440 is nontrivially palindromic in base 11.

13446440 is an esthetic number in base 11, because in such base its adjacent digits differ by 1.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13446449) 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 7 ways as a sum of consecutive naturals, for example, 23732 + ... + 24291.

It is an arithmetic number, because the mean of its divisors is an integer number (1080540).

Almost surely, 2^13446440 is an apocalyptic number.

13446440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13446440 is an abundant number, since it is smaller than the sum of its proper divisors (21130840).

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

13446440 is a wasteful number, since it uses less digits than its factorization.

13446440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48041 (or 48037 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 13446440 is about 3666.9387777818. The cubic root of 13446440 is about 237.7948471036.

Subtracting from 13446440 its reverse (4464431), we obtain a square (8982009 = 2997²).

The spelling of 13446440 in words is "thirteen million, four hundred forty-six thousand, four hundred forty".