81179234 has 8 divisors (see below), whose sum is σ = 122109120. Its totient is φ = 40476196.

The previous prime is 81179177. The next prime is 81179237. The reversal of 81179234 is 43297118.

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

It is a junction number, because it is equal to n+sod(n) for n = 81179194 and 81179203.

It is not an unprimeable number, because it can be changed into a prime (81179237) 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, 55814 + ... + 57249.

It is an arithmetic number, because the mean of its divisors is an integer number (15263640).

Almost surely, 2^81179234 is an apocalyptic number.

81179234 is a deficient number, since it is larger than the sum of its proper divisors (40929886).

81179234 is a wasteful number, since it uses less digits than its factorization.

81179234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113424.

The product of its digits is 12096, while the sum is 35.

The square root of 81179234 is about 9009.9519421582. The cubic root of 81179234 is about 432.9937719895.

The spelling of 81179234 in words is "eighty-one million, one hundred seventy-nine thousand, two hundred thirty-four".