12843390 has 48 divisors (see below), whose sum is σ = 35860752. Its totient is φ = 2935296.

The previous prime is 12843377. The next prime is 12843409. The reversal of 12843390 is 9334821.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2899 + ... + 5838.

It is an arithmetic number, because the mean of its divisors is an integer number (747099).

Almost surely, 2^12843390 is an apocalyptic number.

12843390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12843390 is an abundant number, since it is smaller than the sum of its proper divisors (23017362).

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

12843390 is a wasteful number, since it uses less digits than its factorization.

12843390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8761 (or 8754 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 12843390 is about 3583.7675705882. The cubic root of 12843390 is about 234.1854399716.

The spelling of 12843390 in words is "twelve million, eight hundred forty-three thousand, three hundred ninety".