12005480 has 16 divisors (see below), whose sum is σ = 27012420. Its totient is φ = 4802176.

The previous prime is 12005479. The next prime is 12005489. The reversal of 12005480 is 8450021.

It can be written as a sum of positive squares in 2 ways, for example, as 11276164 + 729316 = 3358^2 + 854^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (12005489) 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, 150029 + ... + 150108.

Almost surely, 2^12005480 is an apocalyptic number.

12005480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12005480 is an abundant number, since it is smaller than the sum of its proper divisors (15006940).

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

12005480 is a wasteful number, since it uses less digits than its factorization.

12005480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300148 (or 300144 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 12005480 is about 3464.8924947248. The cubic root of 12005480 is about 228.9776933962.

The spelling of 12005480 in words is "twelve million, five thousand, four hundred eighty".