12612280 has 32 divisors (see below), whose sum is σ = 29613600. Its totient is φ = 4825216.

The previous prime is 12612277. The next prime is 12612289. The reversal of 12612280 is 8221621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12612289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5935 + ... + 7774.

It is an arithmetic number, because the mean of its divisors is an integer number (925425).

Almost surely, 2^12612280 is an apocalyptic number.

12612280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12612280 is an abundant number, since it is smaller than the sum of its proper divisors (17001320).

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

12612280 is a wasteful number, since it uses less digits than its factorization.

12612280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13743 (or 13739 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 12612280 is about 3551.3771976516. The cubic root of 12612280 is about 232.7722482398.

The spelling of 12612280 in words is "twelve million, six hundred twelve thousand, two hundred eighty".