12286780 has 24 divisors (see below), whose sum is σ = 28148400. Its totient is φ = 4467840.

The previous prime is 12286759. The next prime is 12286783. The reversal of 12286780 is 8768221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12286783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27705 + ... + 28144.

It is an arithmetic number, because the mean of its divisors is an integer number (1172850).

Almost surely, 2^12286780 is an apocalyptic number.

12286780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12286780 is an abundant number, since it is smaller than the sum of its proper divisors (15861620).

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

12286780 is a wasteful number, since it uses less digits than its factorization.

12286780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55869 (or 55867 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 12286780 is about 3505.2503476927. The cubic root of 12286780 is about 230.7522940846.

It can be divided in two parts, 1228 and 6780, that added together give a palindrome (8008).

The spelling of 12286780 in words is "twelve million, two hundred eighty-six thousand, seven hundred eighty".