11078991 has 48 divisors (see below), whose sum is σ = 20747520. Its totient is φ = 5676480.

The previous prime is 11078971. The next prime is 11079007. The reversal of 11078991 is 19987011.

11078991 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11078991 - 2⁵ = 11078959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11078941) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 151731 + ... + 151803.

It is an arithmetic number, because the mean of its divisors is an integer number (432240).

Almost surely, 2^11078991 is an apocalyptic number.

11078991 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11078991 is a deficient number, since it is larger than the sum of its proper divisors (9668529).

11078991 is an equidigital number, since it uses as much as digits as its factorization.

11078991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 36.

The square root of 11078991 is about 3328.5118296320. The cubic root of 11078991 is about 222.9290865568.

The spelling of 11078991 in words is "eleven million, seventy-eight thousand, nine hundred ninety-one".