12983787 has 8 divisors (see below), whose sum is σ = 19235280. Its totient is φ = 8655840.

The previous prime is 12983779. The next prime is 12983791. The reversal of 12983787 is 78738921.

It is not a de Polignac number, because 12983787 - 2³ = 12983779 is a prime.

It is a super-2 number, since 2×12983787² = 337157449722738, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12983287) 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, 240414 + ... + 240467.

It is an arithmetic number, because the mean of its divisors is an integer number (2404410).

Almost surely, 2^12983787 is an apocalyptic number.

12983787 is a deficient number, since it is larger than the sum of its proper divisors (6251493).

12983787 is an equidigital number, since it uses as much as digits as its factorization.

12983787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480890 (or 480884 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 12983787 is about 3603.3022354501. The cubic root of 12983787 is about 235.0356789045.

The spelling of 12983787 in words is "twelve million, nine hundred eighty-three thousand, seven hundred eighty-seven".