12800340 has 72 divisors (see below), whose sum is σ = 44378880. Its totient is φ = 2925504.

The previous prime is 12800329. The next prime is 12800341. The reversal of 12800340 is 4300821.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12800341) 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, 3820 + ... + 6339.

Almost surely, 2^12800340 is an apocalyptic number.

12800340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12800340 is an abundant number, since it is smaller than the sum of its proper divisors (31578540).

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

12800340 is a wasteful number, since it uses less digits than its factorization.

12800340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10181 (or 10176 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 12800340 is about 3577.7562801287. The cubic root of 12800340 is about 233.9234902179.

The spelling of 12800340 in words is "twelve million, eight hundred thousand, three hundred forty".