12984780 has 48 divisors (see below), whose sum is σ = 37346400. Its totient is φ = 3368448.

The previous prime is 12984767. The next prime is 12984791. The reversal of 12984780 is 8748921.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 705 + ... + 5144.

It is an arithmetic number, because the mean of its divisors is an integer number (778050).

Almost surely, 2^12984780 is an apocalyptic number.

12984780 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 12984780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18673200).

12984780 is an abundant number, since it is smaller than the sum of its proper divisors (24361620).

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

12984780 is a wasteful number, since it uses less digits than its factorization.

12984780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5898 (or 5896 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 12984780 is about 3603.4400230890. The cubic root of 12984780 is about 235.0416705945.

The spelling of 12984780 in words is "twelve million, nine hundred eighty-four thousand, seven hundred eighty".