12655480 has 64 divisors (see below), whose sum is σ = 31026240. Its totient is φ = 4626432.

The previous prime is 12655457. The next prime is 12655481. The reversal of 12655480 is 8455621.

It is a super-2 number, since 2×12655480² = 320322348060800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12655481) 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, 24909 + ... + 25411.

It is an arithmetic number, because the mean of its divisors is an integer number (484785).

Almost surely, 2^12655480 is an apocalyptic number.

12655480 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 12655480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15513120).

12655480 is an abundant number, since it is smaller than the sum of its proper divisors (18370760).

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

12655480 is a wasteful number, since it uses less digits than its factorization.

12655480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 12655480 is about 3557.4541458745. The cubic root of 12655480 is about 233.0377117884.

The spelling of 12655480 in words is "twelve million, six hundred fifty-five thousand, four hundred eighty".