11201988 has 36 divisors (see below), whose sum is σ = 30406992. Its totient is φ = 3200400.

The previous prime is 11201987. The next prime is 11202017. The reversal of 11201988 is 88910211.

It is not an unprimeable number, because it can be changed into a prime (11201987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8938 + ... + 10113.

Almost surely, 2^11201988 is an apocalyptic number.

It is an amenable number.

11201988 is an abundant number, since it is smaller than the sum of its proper divisors (19205004).

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

11201988 is a wasteful number, since it uses less digits than its factorization.

11201988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19072 (or 19063 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 30.

The square root of 11201988 is about 3346.9371072669. The cubic root of 11201988 is about 223.7510254523.

The spelling of 11201988 in words is "eleven million, two hundred one thousand, nine hundred eighty-eight".