11079978 has 72 divisors (see below), whose sum is σ = 28038528. Its totient is φ = 2909088.

The previous prime is 11079967. The next prime is 11080007. The reversal of 11079978 is 87997011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 49575 + ... + 49797.

It is an arithmetic number, because the mean of its divisors is an integer number (389424).

Almost surely, 2^11079978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11079978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14019264).

11079978 is an abundant number, since it is smaller than the sum of its proper divisors (16958550).

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

11079978 is a wasteful number, since it uses less digits than its factorization.

11079978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 42.

The square root of 11079978 is about 3328.6600907873. The cubic root of 11079978 is about 222.9357064278.

The spelling of 11079978 in words is "eleven million, seventy-nine thousand, nine hundred seventy-eight".