12197500 has 120 divisors (see below), whose sum is σ = 33064416. Its totient is φ = 3840000.

The previous prime is 12197491. The next prime is 12197501. The reversal of 12197500 is 579121.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12197501) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 297480 + ... + 297520.

Almost surely, 2^12197500 is an apocalyptic number.

12197500 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 12197500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16532208).

12197500 is an abundant number, since it is smaller than the sum of its proper divisors (20866916).

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

12197500 is a wasteful number, since it uses less digits than its factorization.

12197500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 12197500 is about 3492.4919470201. The cubic root of 12197500 is about 230.1920261489.

The spelling of 12197500 in words is "twelve million, one hundred ninety-seven thousand, five hundred".