12748240 has 40 divisors (see below), whose sum is σ = 31203360. Its totient is φ = 4830336.

The previous prime is 12748231. The next prime is 12748247. The reversal of 12748240 is 4284721.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 12748199 and 12748208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12748247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2674 + ... + 5713.

It is an arithmetic number, because the mean of its divisors is an integer number (780084).

Almost surely, 2^12748240 is an apocalyptic number.

12748240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12748240 is an abundant number, since it is smaller than the sum of its proper divisors (18455120).

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

12748240 is a wasteful number, since it uses less digits than its factorization.

12748240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8419 (or 8413 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 12748240 is about 3570.4677564711. The cubic root of 12748240 is about 233.6056865132.

The spelling of 12748240 in words is "twelve million, seven hundred forty-eight thousand, two hundred forty".