12755240 has 16 divisors (see below), whose sum is σ = 28699380. Its totient is φ = 5102080.

The previous prime is 12755233. The next prime is 12755243. The reversal of 12755240 is 4255721.

It can be written as a sum of positive squares in 2 ways, for example, as 12348196 + 407044 = 3514^2 + 638^2 .

It is a super-2 number, since 2×12755240² = 325392294915200, which contains 22 as substring.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (12755243) 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, 159401 + ... + 159480.

Almost surely, 2^12755240 is an apocalyptic number.

12755240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12755240 is an abundant number, since it is smaller than the sum of its proper divisors (15944140).

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

12755240 is a wasteful number, since it uses less digits than its factorization.

12755240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318892 (or 318888 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 12755240 is about 3571.4478856621. The cubic root of 12755240 is about 233.6484359593.

The spelling of 12755240 in words is "twelve million, seven hundred fifty-five thousand, two hundred forty".