12840895 has 8 divisors (see below), whose sum is σ = 15432480. Its totient is φ = 10257120.

The previous prime is 12840871. The next prime is 12840911. The reversal of 12840895 is 59804821.

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

It is not a de Polignac number, because 12840895 - 2⁹ = 12840383 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2665 + ... + 5725.

It is an arithmetic number, because the mean of its divisors is an integer number (1929060).

Almost surely, 2^12840895 is an apocalyptic number.

12840895 is a deficient number, since it is larger than the sum of its proper divisors (2591585).

12840895 is an equidigital number, since it uses as much as digits as its factorization.

12840895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3905.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 12840895 is about 3583.4194563294. The cubic root of 12840895 is about 234.1702744400.

The spelling of 12840895 in words is "twelve million, eight hundred forty thousand, eight hundred ninety-five".