81134882 has 8 divisors (see below), whose sum is σ = 122087196. Its totient is φ = 40439152.

The previous prime is 81134849. The next prime is 81134899. The reversal of 81134882 is 28843118.

It can be written as a sum of positive squares in 2 ways, for example, as 80982001 + 152881 = 8999^2 + 391^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63353 + ... + 64620.

Almost surely, 2^81134882 is an apocalyptic number.

81134882 is a deficient number, since it is larger than the sum of its proper divisors (40952314).

81134882 is a wasteful number, since it uses less digits than its factorization.

81134882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128292.

The product of its digits is 12288, while the sum is 35.

The square root of 81134882 is about 9007.4903274997. The cubic root of 81134882 is about 432.9149027300.

The spelling of 81134882 in words is "eighty-one million, one hundred thirty-four thousand, eight hundred eighty-two".