10881239 has 4 divisors (see below), whose sum is σ = 10896480. Its totient is φ = 10866000.

The previous prime is 10881191. The next prime is 10881251. The reversal of 10881239 is 93218801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10881239 - 2²⁰ = 9832663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10881259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6494 + ... + 7995.

It is an arithmetic number, because the mean of its divisors is an integer number (2724120).

Almost surely, 2^10881239 is an apocalyptic number.

10881239 is a deficient number, since it is larger than the sum of its proper divisors (15241).

10881239 is an equidigital number, since it uses as much as digits as its factorization.

10881239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15240.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 10881239 is about 3298.6723086721. The cubic root of 10881239 is about 221.5947412702.

The spelling of 10881239 in words is "ten million, eight hundred eighty-one thousand, two hundred thirty-nine".