12210780 has 48 divisors (see below), whose sum is σ = 34511904. Its totient is φ = 3225600.

The previous prime is 12210773. The next prime is 12210791. The reversal of 12210780 is 8701221.

12210780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 5880 + ... + 7680.

It is an arithmetic number, because the mean of its divisors is an integer number (718998).

Almost surely, 2^12210780 is an apocalyptic number.

12210780 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 12210780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17255952).

12210780 is an abundant number, since it is smaller than the sum of its proper divisors (22301124).

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

12210780 is a wasteful number, since it uses less digits than its factorization.

12210780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926 (or 1924 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 12210780 is about 3494.3926510912. The cubic root of 12210780 is about 230.2755361950.

The spelling of 12210780 in words is "twelve million, two hundred ten thousand, seven hundred eighty".