1181088 has 48 divisors (see below), whose sum is σ = 3447360. Its totient is φ = 393408.

The previous prime is 1181057. The next prime is 1181093. The reversal of 1181088 is 8801811.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181 + ... + 1547.

It is an arithmetic number, because the mean of its divisors is an integer number (71820).

2^1181088 is an apocalyptic number.

1181088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1181088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1723680).

1181088 is an abundant number, since it is smaller than the sum of its proper divisors (2266272).

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

1181088 is a wasteful number, since it uses less digits than its factorization.

1181088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386 (or 1372 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 27.

The square root of 1181088 is about 1086.7787263284. The cubic root of 1181088 is about 105.7046483266.

Adding to 1181088 its reverse (8801811), we get a palindrome (9982899).

The spelling of 1181088 in words is "one million, one hundred eighty-one thousand, eighty-eight".