12870340 has 72 divisors (see below), whose sum is σ = 32864832. Its totient is φ = 4213440.

The previous prime is 12870337. The next prime is 12870349. The reversal of 12870340 is 4307821.

It is not an unprimeable number, because it can be changed into a prime (12870349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22255 + ... + 22825.

It is an arithmetic number, because the mean of its divisors is an integer number (456456).

Almost surely, 2^12870340 is an apocalyptic number.

12870340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12870340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16432416).

12870340 is an abundant number, since it is smaller than the sum of its proper divisors (19994492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12870340 is a wasteful number, since it uses less digits than its factorization.

12870340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617 (or 608 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 12870340 is about 3587.5256096647. The cubic root of 12870340 is about 234.3491269810.

The spelling of 12870340 in words is "twelve million, eight hundred seventy thousand, three hundred forty".