1181288 has 8 divisors (see below), whose sum is σ = 2214930. Its totient is φ = 590640.

The previous prime is 1181281. The next prime is 1181293. The reversal of 1181288 is 8821811.

It can be written as a sum of positive squares in only one way, i.e., 743044 + 438244 = 862^2 + 662^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1181288.

It is not an unprimeable number, because it can be changed into a prime (1181281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73823 + ... + 73838.

2^1181288 is an apocalyptic number.

It is an amenable number.

1181288 is a deficient number, since it is larger than the sum of its proper divisors (1033642).

1181288 is a wasteful number, since it uses less digits than its factorization.

1181288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147667 (or 147663 counting only the distinct ones).

The product of its digits is 1024, while the sum is 29.

The square root of 1181288 is about 1086.8707374845. The cubic root of 1181288 is about 105.7106145026.

The spelling of 1181288 in words is "one million, one hundred eighty-one thousand, two hundred eighty-eight".