12748940 has 12 divisors (see below), whose sum is σ = 26772816. Its totient is φ = 5099568.

The previous prime is 12748937. The next prime is 12748987. The reversal of 12748940 is 4984721.

It is a super-2 number, since 2×12748940² = 325070942247200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12748940.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318704 + ... + 318743.

It is an arithmetic number, because the mean of its divisors is an integer number (2231068).

Almost surely, 2^12748940 is an apocalyptic number.

12748940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12748940 is an abundant number, since it is smaller than the sum of its proper divisors (14023876).

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

12748940 is a wasteful number, since it uses less digits than its factorization.

12748940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637456 (or 637454 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 12748940 is about 3570.5657814974. The cubic root of 12748940 is about 233.6099621619.

The spelling of 12748940 in words is "twelve million, seven hundred forty-eight thousand, nine hundred forty".