11575988 has 12 divisors (see below), whose sum is σ = 20956740. Its totient is φ = 5588352.

The previous prime is 11575973. The next prime is 11575999. The reversal of 11575988 is 88957511.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5484964 + 6091024 = 2342^2 + 2468^2 .

It is a super-2 number, since 2×11575988² = 268006996352288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49781 + ... + 50012.

It is an arithmetic number, because the mean of its divisors is an integer number (1746395).

Almost surely, 2^11575988 is an apocalyptic number.

It is an amenable number.

11575988 is a deficient number, since it is larger than the sum of its proper divisors (9380752).

11575988 is a wasteful number, since it uses less digits than its factorization.

11575988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99826 (or 99824 counting only the distinct ones).

The product of its digits is 100800, while the sum is 44.

The square root of 11575988 is about 3402.3503640866. The cubic root of 11575988 is about 226.2139358286.

The spelling of 11575988 in words is "eleven million, five hundred seventy-five thousand, nine hundred eighty-eight".