12888817 has 4 divisors (see below), whose sum is σ = 12920740. Its totient is φ = 12856896.

The previous prime is 12888803. The next prime is 12888851. The reversal of 12888817 is 71888821.

12888817 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4800481 + 8088336 = 2191^2 + 2844^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12888817 is a prime.

It is a super-3 number, since 3×12888817³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12888217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15348 + ... + 16165.

It is an arithmetic number, because the mean of its divisors is an integer number (3230185).

Almost surely, 2^12888817 is an apocalyptic number.

It is an amenable number.

12888817 is a deficient number, since it is larger than the sum of its proper divisors (31923).

12888817 is an equidigital number, since it uses as much as digits as its factorization.

12888817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31922.

The product of its digits is 57344, while the sum is 43.

The square root of 12888817 is about 3590.0998593354. The cubic root of 12888817 is about 234.4612192891.

The spelling of 12888817 in words is "twelve million, eight hundred eighty-eight thousand, eight hundred seventeen".