12197880 has 96 divisors (see below), whose sum is σ = 40959360. Its totient is φ = 3144960.

The previous prime is 12197879. The next prime is 12197903. The reversal of 12197880 is 8879121.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10614 + ... + 11706.

It is an arithmetic number, because the mean of its divisors is an integer number (426660).

Almost surely, 2^12197880 is an apocalyptic number.

12197880 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 12197880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20479680).

12197880 is an abundant number, since it is smaller than the sum of its proper divisors (28761480).

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

12197880 is a wasteful number, since it uses less digits than its factorization.

12197880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141 (or 1134 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 12197880 is about 3492.5463490124. The cubic root of 12197880 is about 230.1944165858.

The spelling of 12197880 in words is "twelve million, one hundred ninety-seven thousand, eight hundred eighty".