11975478 has 8 divisors (see below), whose sum is σ = 23950968. Its totient is φ = 3991824.

The previous prime is 11975477. The next prime is 11975519. The reversal of 11975478 is 87457911.

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

11975478 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11975477) 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, 997951 + ... + 997962.

It is an arithmetic number, because the mean of its divisors is an integer number (2993871).

Almost surely, 2^11975478 is an apocalyptic number.

11975478 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.

11975478 is a wasteful number, since it uses less digits than its factorization.

11975478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995918.

The product of its digits is 70560, while the sum is 42.

The square root of 11975478 is about 3460.5603592482. The cubic root of 11975478 is about 228.7867939262.

The spelling of 11975478 in words is "eleven million, nine hundred seventy-five thousand, four hundred seventy-eight".