81463082 has 8 divisors (see below), whose sum is σ = 129382596. Its totient is φ = 38335552.

The previous prime is 81463073. The next prime is 81463087. The reversal of 81463082 is 28036418.

It can be written as a sum of positive squares in 2 ways, for example, as 76930441 + 4532641 = 8771^2 + 2129^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (81463087) 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, 1197953 + ... + 1198020.

Almost surely, 2^81463082 is an apocalyptic number.

81463082 is a deficient number, since it is larger than the sum of its proper divisors (47919514).

81463082 is a wasteful number, since it uses less digits than its factorization.

81463082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2395992.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 81463082 is about 9025.6901121189. The cubic root of 81463082 is about 433.4978477251.

The spelling of 81463082 in words is "eighty-one million, four hundred sixty-three thousand, eighty-two".