12863280 has 40 divisors (see below), whose sum is σ = 39876912. Its totient is φ = 3430144.

The previous prime is 12863261. The next prime is 12863281. The reversal of 12863280 is 8236821.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (12863281) 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, 26559 + ... + 27038.

Almost surely, 2^12863280 is an apocalyptic number.

12863280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12863280 is an abundant number, since it is smaller than the sum of its proper divisors (27013632).

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

12863280 is a wasteful number, since it uses less digits than its factorization.

12863280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53613 (or 53607 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 12863280 is about 3586.5415095883. The cubic root of 12863280 is about 234.3062685573.

The spelling of 12863280 in words is "twelve million, eight hundred sixty-three thousand, two hundred eighty".