10881538 has 16 divisors (see below), whose sum is σ = 16675776. Its totient is φ = 5324400.

The previous prime is 10881511. The next prime is 10881551. The reversal of 10881538 is 83518801.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20545 + ... + 21067.

It is an arithmetic number, because the mean of its divisors is an integer number (1042236).

Almost surely, 2^10881538 is an apocalyptic number.

10881538 is a deficient number, since it is larger than the sum of its proper divisors (5794238).

10881538 is a wasteful number, since it uses less digits than its factorization.

10881538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729.

The product of its (nonzero) digits is 7680, while the sum is 34.

The square root of 10881538 is about 3298.7176296252. The cubic root of 10881538 is about 221.5967709478.

The spelling of 10881538 in words is "ten million, eight hundred eighty-one thousand, five hundred thirty-eight".