10990188 has 108 divisors (see below), whose sum is σ = 32436040. Its totient is φ = 3215520.

The previous prime is 10990183. The next prime is 10990219. The reversal of 10990188 is 88109901.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a tau number, because it is divible by the number of its divisors (108).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (10990181) 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 35 ways as a sum of consecutive naturals, for example, 378958 + ... + 378986.

Almost surely, 2^10990188 is an apocalyptic number.

10990188 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10990188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16218020).

10990188 is an abundant number, since it is smaller than the sum of its proper divisors (21445852).

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

10990188 is a wasteful number, since it uses less digits than its factorization.

10990188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93 (or 45 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The square root of 10990188 is about 3315.1452456868. The cubic root of 10990188 is about 222.3318630443.

The spelling of 10990188 in words is "ten million, nine hundred ninety thousand, one hundred eighty-eight".