12840435 has 12 divisors (see below), whose sum is σ = 22256832. Its totient is φ = 6848208.

The previous prime is 12840427. The next prime is 12840461. The reversal of 12840435 is 53404821.

It is not a de Polignac number, because 12840435 - 2³ = 12840427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12840399 and 12840408.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142627 + ... + 142716.

It is an arithmetic number, because the mean of its divisors is an integer number (1854736).

Almost surely, 2^12840435 is an apocalyptic number.

12840435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12840435 is a deficient number, since it is larger than the sum of its proper divisors (9416397).

12840435 is a wasteful number, since it uses less digits than its factorization.

12840435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285354 (or 285351 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 12840435 is about 3583.3552712507. The cubic root of 12840435 is about 234.1674781756.

The spelling of 12840435 in words is "twelve million, eight hundred forty thousand, four hundred thirty-five".