12108720 has 80 divisors (see below), whose sum is σ = 40434912. Its totient is φ = 2979840.

The previous prime is 12108713. The next prime is 12108727. The reversal of 12108720 is 2780121.

It is an interprime number because it is at equal distance from previous prime (12108713) and next prime (12108727).

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

It is a super-2 number, since 2×12108720² = 293242200076800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12108727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1180 + ... + 5060.

Almost surely, 2^12108720 is an apocalyptic number.

12108720 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 12108720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20217456).

12108720 is an abundant number, since it is smaller than the sum of its proper divisors (28326192).

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

12108720 is a wasteful number, since it uses less digits than its factorization.

12108720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3910 (or 3904 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 12108720 is about 3479.7586123178. The cubic root of 12108720 is about 229.6321783096.

Adding to 12108720 its reverse (2780121), we get a palindrome (14888841).

The spelling of 12108720 in words is "twelve million, one hundred eight thousand, seven hundred twenty".