11853978 has 8 divisors (see below), whose sum is σ = 23707968. Its totient is φ = 3951324.

The previous prime is 11853943. The next prime is 11853979. The reversal of 11853978 is 87935811.

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

11853978 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 not an unprimeable number, because it can be changed into a prime (11853979) 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 3 ways as a sum of consecutive naturals, for example, 987826 + ... + 987837.

It is an arithmetic number, because the mean of its divisors is an integer number (2963496).

Almost surely, 2^11853978 is an apocalyptic number.

11853978 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.

11853978 is a wasteful number, since it uses less digits than its factorization.

11853978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1975668.

The product of its digits is 60480, while the sum is 42.

The square root of 11853978 is about 3442.9606445616. The cubic root of 11853978 is about 228.0104258083.

The spelling of 11853978 in words is "eleven million, eight hundred fifty-three thousand, nine hundred seventy-eight".