13405960 has 16 divisors (see below), whose sum is σ = 30163500. Its totient is φ = 5362368.

The previous prime is 13405957. The next prime is 13405961. The reversal of 13405960 is 6950431.

It can be written as a sum of positive squares in 2 ways, for example, as 11383876 + 2022084 = 3374^2 + 1422^2 .

It is not an unprimeable number, because it can be changed into a prime (13405961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167535 + ... + 167614.

Almost surely, 2^13405960 is an apocalyptic number.

13405960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13405960 is an abundant number, since it is smaller than the sum of its proper divisors (16757540).

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

13405960 is a wasteful number, since it uses less digits than its factorization.

13405960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335160 (or 335156 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 13405960 is about 3661.4150270080. The cubic root of 13405960 is about 237.5559831093. Note that the first 3 decimals are identical.

It can be divided in two parts, 13405 and 960, that added together give a triangular number (14365 = T₁₆₉).

The spelling of 13405960 in words is "thirteen million, four hundred five thousand, nine hundred sixty".