13358440 has 32 divisors (see below), whose sum is σ = 30161160. Its totient is φ = 5324800.

The previous prime is 13358417. The next prime is 13358441. The reversal of 13358440 is 4485331.

It can be written as a sum of positive squares in 4 ways, for example, as 11874916 + 1483524 = 3446^2 + 1218^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13358399 and 13358408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13358441) 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, 20520 + ... + 21160.

Almost surely, 2^13358440 is an apocalyptic number.

13358440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13358440 is an abundant number, since it is smaller than the sum of its proper divisors (16802720).

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

13358440 is a wasteful number, since it uses less digits than its factorization.

13358440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173 (or 1169 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 13358440 is about 3654.9199717641. The cubic root of 13358440 is about 237.2749632017.

The spelling of 13358440 in words is "thirteen million, three hundred fifty-eight thousand, four hundred forty".