11631588 has 24 divisors (see below), whose sum is σ = 27447840. Its totient is φ = 3833280.

The previous prime is 11631559. The next prime is 11631589. The reversal of 11631588 is 88513611.

It is not an unprimeable number, because it can be changed into a prime (11631589) 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, 4378 + ... + 6513.

It is an arithmetic number, because the mean of its divisors is an integer number (1143660).

Almost surely, 2^11631588 is an apocalyptic number.

It is an amenable number.

11631588 is an abundant number, since it is smaller than the sum of its proper divisors (15816252).

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

11631588 is a wasteful number, since it uses less digits than its factorization.

11631588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10987 (or 10985 counting only the distinct ones).

The product of its digits is 5760, while the sum is 33.

The square root of 11631588 is about 3410.5113986029. The cubic root of 11631588 is about 226.5755294893.

It can be divided in two parts, 116315 and 88, that added together give a triangular number (116403 = T₄₈₂).

The spelling of 11631588 in words is "eleven million, six hundred thirty-one thousand, five hundred eighty-eight".