12840694 has 16 divisors (see below), whose sum is σ = 20346480. Its totient is φ = 6060960.

The previous prime is 12840691. The next prime is 12840697. The reversal of 12840694 is 49604821.

It is an interprime number because it is at equal distance from previous prime (12840691) and next prime (12840697).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12840691) 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, 17152 + ... + 17884.

It is an arithmetic number, because the mean of its divisors is an integer number (1271655).

Almost surely, 2^12840694 is an apocalyptic number.

12840694 is a deficient number, since it is larger than the sum of its proper divisors (7505786).

12840694 is a wasteful number, since it uses less digits than its factorization.

12840694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 12840694 is about 3583.3914103821. The cubic root of 12840694 is about 234.1690526022.

The spelling of 12840694 in words is "twelve million, eight hundred forty thousand, six hundred ninety-four".