12870780 has 96 divisors (see below), whose sum is σ = 40219200. Its totient is φ = 3053568.

The previous prime is 12870779. The next prime is 12870799. The reversal of 12870780 is 8707821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22336 + ... + 22904.

It is an arithmetic number, because the mean of its divisors is an integer number (418950).

Almost surely, 2^12870780 is an apocalyptic number.

12870780 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 12870780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20109600).

12870780 is an abundant number, since it is smaller than the sum of its proper divisors (27348420).

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

12870780 is a wasteful number, since it uses less digits than its factorization.

12870780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623 (or 621 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 33.

The square root of 12870780 is about 3587.5869327446. The cubic root of 12870780 is about 234.3517975253.

The spelling of 12870780 in words is "twelve million, eight hundred seventy thousand, seven hundred eighty".