10988881 has 4 divisors (see below), whose sum is σ = 11003632. Its totient is φ = 10974132.

The previous prime is 10988863. The next prime is 10988893. The reversal of 10988881 is 18888901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18888901 = 2099 ⋅8999.

It is a cyclic number.

It is not a de Polignac number, because 10988881 - 2¹⁷ = 10857809 is a prime.

It is a super-2 number, since 2×10988881² = 241511011264322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10988281) 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 3 ways as a sum of consecutive naturals, for example, 6195 + ... + 7768.

It is an arithmetic number, because the mean of its divisors is an integer number (2750908).

Almost surely, 2^10988881 is an apocalyptic number.

It is an amenable number.

10988881 is a deficient number, since it is larger than the sum of its proper divisors (14751).

10988881 is an equidigital number, since it uses as much as digits as its factorization.

10988881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14750.

The product of its (nonzero) digits is 36864, while the sum is 43.

The square root of 10988881 is about 3314.9481142244. The cubic root of 10988881 is about 222.3230491439.

The spelling of 10988881 in words is "ten million, nine hundred eighty-eight thousand, eight hundred eighty-one".