12840794 has 8 divisors (see below), whose sum is σ = 19925460. Its totient is φ = 6198976.

The previous prime is 12840791. The next prime is 12840799. The reversal of 12840794 is 49704821.

It can be written as a sum of positive squares in 2 ways, for example, as 12496225 + 344569 = 3535^2 + 587^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12840791) 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, 110639 + ... + 110754.

Almost surely, 2^12840794 is an apocalyptic number.

12840794 is a deficient number, since it is larger than the sum of its proper divisors (7084666).

12840794 is a wasteful number, since it uses less digits than its factorization.

12840794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221424.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 12840794 is about 3583.4053636171. The cubic root of 12840794 is about 234.1696604833.

The spelling of 12840794 in words is "twelve million, eight hundred forty thousand, seven hundred ninety-four".