12047478 has 8 divisors (see below), whose sum is σ = 24094968. Its totient is φ = 4015824.

The previous prime is 12047473. The next prime is 12047479. The reversal of 12047478 is 87474021.

It is a sphenic number, since it is the product of 3 distinct primes.

12047478 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12047473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1003951 + ... + 1003962.

It is an arithmetic number, because the mean of its divisors is an integer number (3011871).

Almost surely, 2^12047478 is an apocalyptic number.

12047478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12047478 is a wasteful number, since it uses less digits than its factorization.

12047478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007918.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 12047478 is about 3470.9477091999. The cubic root of 12047478 is about 229.2443886385.

The spelling of 12047478 in words is "twelve million, forty-seven thousand, four hundred seventy-eight".