81047114 has 8 divisors (see below), whose sum is σ = 121691460. Its totient is φ = 40483296.

The previous prime is 81047107. The next prime is 81047137. The reversal of 81047114 is 41174018.

It can be written as a sum of positive squares in 2 ways, for example, as 50055625 + 30991489 = 7075^2 + 5567^2 .

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, 17549 + ... + 21680.

Almost surely, 2^81047114 is an apocalyptic number.

81047114 is a deficient number, since it is larger than the sum of its proper divisors (40644346).

81047114 is a wasteful number, since it uses less digits than its factorization.

81047114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40264.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 81047114 is about 9002.6170639431. The cubic root of 81047114 is about 432.7587439021.

The spelling of 81047114 in words is "eighty-one million, forty-seven thousand, one hundred fourteen".