12197724 has 96 divisors (see below), whose sum is σ = 36427776. Its totient is φ = 3084480.

The previous prime is 12197723. The next prime is 12197737. The reversal of 12197724 is 42779121.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12197723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39579 + ... + 39885.

It is an arithmetic number, because the mean of its divisors is an integer number (379456).

Almost surely, 2^12197724 is an apocalyptic number.

12197724 is a gapful number since it is divisible by the number (14) 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 12197724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18213888).

12197724 is an abundant number, since it is smaller than the sum of its proper divisors (24230052).

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

12197724 is a wasteful number, since it uses less digits than its factorization.

12197724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 373 counting only the distinct ones).

The product of its digits is 7056, while the sum is 33.

The square root of 12197724 is about 3492.5240156655. The cubic root of 12197724 is about 230.1934352545.

It can be divided in two parts, 12197 and 724, that added together give a palindrome (12921).

The spelling of 12197724 in words is "twelve million, one hundred ninety-seven thousand, seven hundred twenty-four".