12878507 has 4 divisors (see below), whose sum is σ = 12889296. Its totient is φ = 12867720.

The previous prime is 12878491. The next prime is 12878519. The reversal of 12878507 is 70587821.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12878507 - 2⁴ = 12878491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12872507) 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, 3344 + ... + 6077.

It is an arithmetic number, because the mean of its divisors is an integer number (3222324).

Almost surely, 2^12878507 is an apocalyptic number.

12878507 is a deficient number, since it is larger than the sum of its proper divisors (10789).

12878507 is an equidigital number, since it uses as much as digits as its factorization.

12878507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10788.

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 12878507 is about 3588.6636788643. The cubic root of 12878507 is about 234.3986860092.

The spelling of 12878507 in words is "twelve million, eight hundred seventy-eight thousand, five hundred seven".