13438260 has 108 divisors (see below), whose sum is σ = 44877924. Its totient is φ = 3252480.

The previous prime is 13438259. The next prime is 13438261. The reversal of 13438260 is 6283431.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13438259) and next prime (13438261).

It can be written as a sum of positive squares in 2 ways, for example, as 2108304 + 11329956 = 1452^2 + 3366^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13438261) 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 35 ways as a sum of consecutive naturals, for example, 21472 + ... + 22088.

Almost surely, 2^13438260 is an apocalyptic number.

13438260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13438260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22438962).

13438260 is an abundant number, since it is smaller than the sum of its proper divisors (31439664).

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

13438260 is a wasteful number, since it uses less digits than its factorization.

13438260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654 (or 638 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 13438260 is about 3665.8232363277. The cubic root of 13438260 is about 237.7466173262.

The spelling of 13438260 in words is "thirteen million, four hundred thirty-eight thousand, two hundred sixty".