12878506 has 8 divisors (see below), whose sum is σ = 19340640. Its totient is φ = 6431628.

The previous prime is 12878491. The next prime is 12878519. The reversal of 12878506 is 60587821.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1396 + ... + 5263.

It is an arithmetic number, because the mean of its divisors is an integer number (2417580).

Almost surely, 2^12878506 is an apocalyptic number.

12878506 is a deficient number, since it is larger than the sum of its proper divisors (6462134).

12878506 is an equidigital number, since it uses as much as digits as its factorization.

12878506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7628.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 12878506 is about 3588.6635395367. The cubic root of 12878506 is about 234.3986799422.

The spelling of 12878506 in words is "twelve million, eight hundred seventy-eight thousand, five hundred six".