12078530 has 32 divisors (see below), whose sum is σ = 22947840. Its totient is φ = 4570560.

The previous prime is 12078527. The next prime is 12078533. The reversal of 12078530 is 3587021.

It is an interprime number because it is at equal distance from previous prime (12078527) and next prime (12078533).

It is a self number, because there is not a number n which added to its sum of digits gives 12078530.

It is not an unprimeable number, because it can be changed into a prime (12078533) 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 15 ways as a sum of consecutive naturals, for example, 14156 + ... + 14984.

It is an arithmetic number, because the mean of its divisors is an integer number (717120).

Almost surely, 2^12078530 is an apocalyptic number.

12078530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12078530 is a deficient number, since it is larger than the sum of its proper divisors (10869310).

12078530 is a wasteful number, since it uses less digits than its factorization.

12078530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 12078530 is about 3475.4179604761. The cubic root of 12078530 is about 229.4411764253.

The spelling of 12078530 in words is "twelve million, seventy-eight thousand, five hundred thirty".