12195520 has 56 divisors (see below), whose sum is σ = 30321504. Its totient is φ = 4663296.

The previous prime is 12195499. The next prime is 12195527. The reversal of 12195520 is 2559121.

It is not an unprimeable number, because it can be changed into a prime (12195527) 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, 6532 + ... + 8188.

Almost surely, 2^12195520 is an apocalyptic number.

12195520 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 12195520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15160752).

12195520 is an abundant number, since it is smaller than the sum of its proper divisors (18125984).

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

12195520 is a wasteful number, since it uses less digits than its factorization.

12195520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697 (or 1687 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 12195520 is about 3492.2084702950. The cubic root of 12195520 is about 230.1795699113.

The spelling of 12195520 in words is "twelve million, one hundred ninety-five thousand, five hundred twenty".