11789978 has 8 divisors (see below), whose sum is σ = 17783220. Its totient is φ = 5862240.

The previous prime is 11789977. The next prime is 11789983. The reversal of 11789978 is 87998711.

It can be written as a sum of positive squares in 2 ways, for example, as 11785489 + 4489 = 3433^2 + 67^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11789971) 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, 15923 + ... + 16646.

Almost surely, 2^11789978 is an apocalyptic number.

11789978 is a deficient number, since it is larger than the sum of its proper divisors (5993242).

11789978 is a wasteful number, since it uses less digits than its factorization.

11789978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32752.

The product of its digits is 254016, while the sum is 50.

The square root of 11789978 is about 3433.6537390948. The cubic root of 11789978 is about 227.5993399433.

The spelling of 11789978 in words is "eleven million, seven hundred eighty-nine thousand, nine hundred seventy-eight".