12213760 has 80 divisors (see below), whose sum is σ = 31622976. Its totient is φ = 4497408.

The previous prime is 12213739. The next prime is 12213779. The reversal of 12213760 is 6731221.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33097 + ... + 33463.

Almost surely, 2^12213760 is an apocalyptic number.

12213760 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 12213760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15811488).

12213760 is an abundant number, since it is smaller than the sum of its proper divisors (19409216).

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

12213760 is an equidigital number, since it uses as much as digits as its factorization.

12213760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 12213760 is about 3494.8190224960. The cubic root of 12213760 is about 230.2942673294.

Adding to 12213760 its reverse (6731221), we get a palindrome (18944981).

The spelling of 12213760 in words is "twelve million, two hundred thirteen thousand, seven hundred sixty".