81134074 has 8 divisors (see below), whose sum is σ = 139087008. Its totient is φ = 34771740.

The previous prime is 81134069. The next prime is 81134089. The reversal of 81134074 is 47043118.

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

It is an unprimeable number.

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, 2897632 + ... + 2897659.

It is an arithmetic number, because the mean of its divisors is an integer number (17385876).

Almost surely, 2^81134074 is an apocalyptic number.

81134074 is a deficient number, since it is larger than the sum of its proper divisors (57952934).

81134074 is a wasteful number, since it uses less digits than its factorization.

81134074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5795300.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 81134074 is about 9007.4454758272. The cubic root of 81134074 is about 432.9134656317.

The spelling of 81134074 in words is "eighty-one million, one hundred thirty-four thousand, seventy-four".