81469112 has 32 divisors (see below), whose sum is σ = 161241600. Its totient is φ = 38483424.

The previous prime is 81469081. The next prime is 81469121. The reversal of 81469112 is 21196418.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91823 + ... + 92705.

It is an arithmetic number, because the mean of its divisors is an integer number (5038800).

Almost surely, 2^81469112 is an apocalyptic number.

It is an amenable number.

81469112 is a deficient number, since it is larger than the sum of its proper divisors (79772488).

81469112 is a wasteful number, since it uses less digits than its factorization.

81469112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515 (or 1511 counting only the distinct ones).

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

The square root of 81469112 is about 9026.0241524162. The cubic root of 81469112 is about 433.5085434802.

The spelling of 81469112 in words is "eighty-one million, four hundred sixty-nine thousand, one hundred twelve".