12870117 has 32 divisors (see below), whose sum is σ = 21109760. Its totient is φ = 7698240.

The previous prime is 12870107. The next prime is 12870157. The reversal of 12870117 is 71107821.

12870117 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12870117 - 2⁴ = 12870101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12870107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12492 + ... + 13482.

It is an arithmetic number, because the mean of its divisors is an integer number (659680).

Almost surely, 2^12870117 is an apocalyptic number.

It is an amenable number.

12870117 is a deficient number, since it is larger than the sum of its proper divisors (8239643).

12870117 is a wasteful number, since it uses less digits than its factorization.

12870117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050 (or 1044 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 27.

The square root of 12870117 is about 3587.4945296126. The cubic root of 12870117 is about 234.3477734773.

Adding to 12870117 its reverse (71107821), we get a palindrome (83977938).

The spelling of 12870117 in words is "twelve million, eight hundred seventy thousand, one hundred seventeen".