12578280 has 128 divisors (see below), whose sum is σ = 44392320. Its totient is φ = 2810880.

The previous prime is 12578239. The next prime is 12578303. The reversal of 12578280 is 8287521.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16794 + ... + 17526.

It is an arithmetic number, because the mean of its divisors is an integer number (346815).

Almost surely, 2^12578280 is an apocalyptic number.

12578280 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 12578280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22196160).

12578280 is an abundant number, since it is smaller than the sum of its proper divisors (31814040).

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

12578280 is a wasteful number, since it uses less digits than its factorization.

12578280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771 (or 767 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 12578280 is about 3546.5870918391. The cubic root of 12578280 is about 232.5628919928.

The spelling of 12578280 in words is "twelve million, five hundred seventy-eight thousand, two hundred eighty".