12646880 has 24 divisors (see below), whose sum is σ = 29878632. Its totient is φ = 5058688.

The previous prime is 12646877. The next prime is 12646883. The reversal of 12646880 is 8864621.

It is an interprime number because it is at equal distance from previous prime (12646877) and next prime (12646883).

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 12646880.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12646883) 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 3 ways as a sum of consecutive naturals, for example, 39362 + ... + 39681.

It is an arithmetic number, because the mean of its divisors is an integer number (1244943).

Almost surely, 2^12646880 is an apocalyptic number.

12646880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12646880 is an abundant number, since it is smaller than the sum of its proper divisors (17231752).

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

12646880 is an equidigital number, since it uses as much as digits as its factorization.

12646880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79058 (or 79050 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 12646880 is about 3556.2452108931. The cubic root of 12646880 is about 232.9849130941.

The spelling of 12646880 in words is "twelve million, six hundred forty-six thousand, eight hundred eighty".