11630988 has 18 divisors (see below), whose sum is σ = 29400644. Its totient is φ = 3876984.

The previous prime is 11630947. The next prime is 11630989. The reversal of 11630988 is 88903611.

11630988 is a `hidden beast` number, since 11 + 630 + 9 + 8 + 8 = 666.

11630988 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×11630988² = 270559763712288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 323083 = 11630988 / (1 + 1 + 6 + 3 + 0 + 9 + 8 + 8).

It is not an unprimeable number, because it can be changed into a prime (11630989) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 161506 + ... + 161577.

Almost surely, 2^11630988 is an apocalyptic number.

11630988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11630988 is an abundant number, since it is smaller than the sum of its proper divisors (17769656).

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

11630988 is a wasteful number, since it uses less digits than its factorization.

11630988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323093 (or 323088 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 11630988 is about 3410.4234341208. The cubic root of 11630988 is about 226.5716335565.

The spelling of 11630988 in words is "eleven million, six hundred thirty thousand, nine hundred eighty-eight".