11983278 has 8 divisors (see below), whose sum is σ = 23966568. Its totient is φ = 3994424.

The previous prime is 11983277. The next prime is 11983289. The reversal of 11983278 is 87238911.

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

11983278 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11983277) 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, 998601 + ... + 998612.

It is an arithmetic number, because the mean of its divisors is an integer number (2995821).

Almost surely, 2^11983278 is an apocalyptic number.

11983278 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.

11983278 is a wasteful number, since it uses less digits than its factorization.

11983278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997218.

The product of its digits is 24192, while the sum is 39.

The square root of 11983278 is about 3461.6871609087. The cubic root of 11983278 is about 228.8364551225.

The spelling of 11983278 in words is "eleven million, nine hundred eighty-three thousand, two hundred seventy-eight".