11670978 has 64 divisors (see below), whose sum is σ = 27578880. Its totient is φ = 3254400.

The previous prime is 11670977. The next prime is 11670991. The reversal of 11670978 is 87907611.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11670977) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51301 + ... + 51527.

It is an arithmetic number, because the mean of its divisors is an integer number (430920).

Almost surely, 2^11670978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11670978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13789440).

11670978 is an abundant number, since it is smaller than the sum of its proper divisors (15907902).

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

11670978 is a wasteful number, since it uses less digits than its factorization.

11670978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303.

The product of its (nonzero) digits is 21168, while the sum is 39.

The square root of 11670978 is about 3416.2813116018. The cubic root of 11670978 is about 226.8310049093.

The spelling of 11670978 in words is "eleven million, six hundred seventy thousand, nine hundred seventy-eight".