81043468 has 48 divisors (see below), whose sum is σ = 161489664. Its totient is φ = 35259840.

The previous prime is 81043453. The next prime is 81043477. The reversal of 81043468 is 86434018.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108705 + ... + 109447.

It is an arithmetic number, because the mean of its divisors is an integer number (3364368).

Almost surely, 2^81043468 is an apocalyptic number.

It is an amenable number.

81043468 is a deficient number, since it is larger than the sum of its proper divisors (80446196).

81043468 is a wasteful number, since it uses less digits than its factorization.

81043468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862 (or 860 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 81043468 is about 9002.4145649931. The cubic root of 81043468 is about 432.7522544173.

The spelling of 81043468 in words is "eighty-one million, forty-three thousand, four hundred sixty-eight".