12720176 has 40 divisors (see below), whose sum is σ = 28405920. Its totient is φ = 5405184.

The previous prime is 12720163. The next prime is 12720179. The reversal of 12720176 is 67102721.

It is not an unprimeable number, because it can be changed into a prime (12720179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14930 + ... + 15758.

It is an arithmetic number, because the mean of its divisors is an integer number (710148).

Almost surely, 2^12720176 is an apocalyptic number.

12720176 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 12720176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14202960).

12720176 is an abundant number, since it is smaller than the sum of its proper divisors (15685744).

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

12720176 is a wasteful number, since it uses less digits than its factorization.

12720176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981 (or 975 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 12720176 is about 3566.5355739148. The cubic root of 12720176 is about 233.4341405689.

Adding to 12720176 its reverse (67102721), we get a palindrome (79822897).

The spelling of 12720176 in words is "twelve million, seven hundred twenty thousand, one hundred seventy-six".