12397536 has 60 divisors (see below), whose sum is σ = 36468432. Its totient is φ = 4131648.

The previous prime is 12397513. The next prime is 12397537. The reversal of 12397536 is 63579321.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12397536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12397537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 201 + ... + 4983.

Almost surely, 2^12397536 is an apocalyptic number.

12397536 is a gapful number since it is divisible by the number (16) 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 12397536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18234216).

12397536 is an abundant number, since it is smaller than the sum of its proper divisors (24070896).

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

12397536 is an equidigital number, since it uses as much as digits as its factorization.

12397536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4805 (or 4788 counting only the distinct ones).

The product of its digits is 34020, while the sum is 36.

The square root of 12397536 is about 3521.0134904598. The cubic root of 12397536 is about 231.4435733955.

The spelling of 12397536 in words is "twelve million, three hundred ninety-seven thousand, five hundred thirty-six".