11978874 has 16 divisors (see below), whose sum is σ = 26619840. Its totient is φ = 3992940.

The previous prime is 11978867. The next prime is 11978893. The reversal of 11978874 is 47887911.

It is a congruent number.

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, 110862 + ... + 110969.

It is an arithmetic number, because the mean of its divisors is an integer number (1663740).

Almost surely, 2^11978874 is an apocalyptic number.

11978874 is an abundant number, since it is smaller than the sum of its proper divisors (14640966).

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

11978874 is a wasteful number, since it uses less digits than its factorization.

11978874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221842 (or 221836 counting only the distinct ones).

The product of its digits is 112896, while the sum is 45.

The square root of 11978874 is about 3461.0509964460. The cubic root of 11978874 is about 228.8084182967.

The spelling of 11978874 in words is "eleven million, nine hundred seventy-eight thousand, eight hundred seventy-four".