12195780 has 48 divisors (see below), whose sum is σ = 34367424. Its totient is φ = 3231360.

The previous prime is 12195779. The next prime is 12195787. The reversal of 12195780 is 8759121.

12195780 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12195787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10299 + ... + 11421.

It is an arithmetic number, because the mean of its divisors is an integer number (715988).

Almost surely, 2^12195780 is an apocalyptic number.

12195780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12195780 is an abundant number, since it is smaller than the sum of its proper divisors (22171644).

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

12195780 is a wasteful number, since it uses less digits than its factorization.

12195780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316 (or 1314 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 12195780 is about 3492.2456958238. The cubic root of 12195780 is about 230.1812056557.

The spelling of 12195780 in words is "twelve million, one hundred ninety-five thousand, seven hundred eighty".