12857378 has 8 divisors (see below), whose sum is σ = 19305372. Its totient is φ = 6422256.

The previous prime is 12857347. The next prime is 12857381. The reversal of 12857378 is 87375821.

It can be written as a sum of positive squares in 2 ways, for example, as 12694969 + 162409 = 3563^2 + 403^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125 + ... + 5072.

Almost surely, 2^12857378 is an apocalyptic number.

12857378 is a deficient number, since it is larger than the sum of its proper divisors (6447994).

12857378 is a wasteful number, since it uses less digits than its factorization.

12857378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6436.

The product of its digits is 94080, while the sum is 41.

The square root of 12857378 is about 3585.7186169581. The cubic root of 12857378 is about 234.2704278503.

The spelling of 12857378 in words is "twelve million, eight hundred fifty-seven thousand, three hundred seventy-eight".