12981829 has 24 divisors (see below), whose sum is σ = 16355520. Its totient is φ = 10055808.

The previous prime is 12981827. The next prime is 12981851. The reversal of 12981829 is 92818921.

It is not a de Polignac number, because 12981829 - 2¹ = 12981827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12981791 and 12981800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12981827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 220002 + ... + 220060.

It is an arithmetic number, because the mean of its divisors is an integer number (681480).

Almost surely, 2^12981829 is an apocalyptic number.

It is an amenable number.

12981829 is a deficient number, since it is larger than the sum of its proper divisors (3373691).

12981829 is an equidigital number, since it uses as much as digits as its factorization.

12981829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 126 counting only the distinct ones).

The product of its digits is 20736, while the sum is 40.

The square root of 12981829 is about 3603.0305299844. The cubic root of 12981829 is about 235.0238635794.

The spelling of 12981829 in words is "twelve million, nine hundred eighty-one thousand, eight hundred twenty-nine".