12078580 has 24 divisors (see below), whose sum is σ = 25715592. Its totient is φ = 4764672.

The previous prime is 12078569. The next prime is 12078581. The reversal of 12078580 is 8587021.

12078580 = T₁₂₉ + T₁₃₀ + ... + T₄₂₀.

It can be written as a sum of positive squares in 4 ways, for example, as 2702736 + 9375844 = 1644^2 + 3062^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12078581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2677 + ... + 5596.

It is an arithmetic number, because the mean of its divisors is an integer number (1071483).

Almost surely, 2^12078580 is an apocalyptic number.

12078580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12078580 is an abundant number, since it is smaller than the sum of its proper divisors (13637012).

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

12078580 is a wasteful number, since it uses less digits than its factorization.

12078580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8355 (or 8353 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 12078580 is about 3475.4251538481. The cubic root of 12078580 is about 229.4414930213.

The spelling of 12078580 in words is "twelve million, seventy-eight thousand, five hundred eighty".