12078458 has 16 divisors (see below), whose sum is σ = 20818944. Its totient is φ = 5148240.

The previous prime is 12078439. The next prime is 12078467. The reversal of 12078458 is 85487021.

It is an unprimeable number.

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, 416 + ... + 4932.

It is an arithmetic number, because the mean of its divisors is an integer number (1301184).

Almost surely, 2^12078458 is an apocalyptic number.

12078458 is a deficient number, since it is larger than the sum of its proper divisors (8740486).

12078458 is a wasteful number, since it uses less digits than its factorization.

12078458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4717.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 12078458 is about 3475.4076019943. The cubic root of 12078458 is about 229.4407205255.

The spelling of 12078458 in words is "twelve million, seventy-eight thousand, four hundred fifty-eight".