12078280 has 32 divisors (see below), whose sum is σ = 27914040. Its totient is φ = 4700160.

The previous prime is 12078277. The next prime is 12078299. The reversal of 12078280 is 8287021.

It can be written as a sum of positive squares in 4 ways, for example, as 11009124 + 1069156 = 3318^2 + 1034^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2601 + ... + 5560.

Almost surely, 2^12078280 is an apocalyptic number.

12078280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12078280 is an abundant number, since it is smaller than the sum of its proper divisors (15835760).

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

12078280 is a wasteful number, since it uses less digits than its factorization.

12078280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8209 (or 8205 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 12078280 is about 3475.3819933930. The cubic root of 12078280 is about 229.4395934322.

It can be divided in two parts, 120 and 78280, that added together give a square (78400 = 280²).

The spelling of 12078280 in words is "twelve million, seventy-eight thousand, two hundred eighty".