11281588 has 12 divisors (see below), whose sum is σ = 19815012. Its totient is φ = 5620160.

The previous prime is 11281583. The next prime is 11281597. The reversal of 11281588 is 88518211.

It can be written as a sum of positive squares in 2 ways, for example, as 5702544 + 5579044 = 2388^2 + 2362^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11281583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3895 + ... + 6142.

It is an arithmetic number, because the mean of its divisors is an integer number (1651251).

Almost surely, 2^11281588 is an apocalyptic number.

It is an amenable number.

11281588 is a deficient number, since it is larger than the sum of its proper divisors (8533424).

11281588 is a wasteful number, since it uses less digits than its factorization.

11281588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10322 (or 10320 counting only the distinct ones).

The product of its digits is 5120, while the sum is 34.

The square root of 11281588 is about 3358.8075264891. The cubic root of 11281588 is about 224.2797578152.

Adding to 11281588 its reverse (88518211), we get a palindrome (99799799).

The spelling of 11281588 in words is "eleven million, two hundred eighty-one thousand, five hundred eighty-eight".