1191088 has 40 divisors (see below), whose sum is σ = 2544480. Its totient is φ = 537600.

The previous prime is 1191079. The next prime is 1191089. The reversal of 1191088 is 8801911.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1191089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7813 + ... + 7963.

It is an arithmetic number, because the mean of its divisors is an integer number (63612).

2^1191088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1191088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1272240).

1191088 is an abundant number, since it is smaller than the sum of its proper divisors (1353392).

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

1191088 is a wasteful number, since it uses less digits than its factorization.

1191088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 28.

The square root of 1191088 is about 1091.3697815131. The cubic root of 1191088 is about 106.0021359484.

Adding to 1191088 its reverse (8801911), we get a palindrome (9992999).

The spelling of 1191088 in words is "one million, one hundred ninety-one thousand, eighty-eight".