12887345 has 8 divisors (see below), whose sum is σ = 15564264. Its totient is φ = 10243584.

The previous prime is 12887341. The next prime is 12887389. The reversal of 12887345 is 54378821.

It can be written as a sum of positive squares in 4 ways, for example, as 92416 + 12794929 = 304^2 + 3577^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12887345 - 2² = 12887341 is a prime.

It is a super-2 number, since 2×12887345² = 332167322298050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12887299 and 12887308.

It is not an unprimeable number, because it can be changed into a prime (12887341) 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, 7424 + ... + 8993.

It is an arithmetic number, because the mean of its divisors is an integer number (1945533).

Almost surely, 2^12887345 is an apocalyptic number.

It is an amenable number.

12887345 is a deficient number, since it is larger than the sum of its proper divisors (2676919).

12887345 is a wasteful number, since it uses less digits than its factorization.

12887345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16579.

The product of its digits is 53760, while the sum is 38.

The square root of 12887345 is about 3589.8948452566. The cubic root of 12887345 is about 234.4522932034.

The spelling of 12887345 in words is "twelve million, eight hundred eighty-seven thousand, three hundred forty-five".