81049714 has 8 divisors (see below), whose sum is σ = 124161408. Its totient is φ = 39662580.

The previous prime is 81049691. The next prime is 81049729. The reversal of 81049714 is 41794018.

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

It is a super-2 number, since 2×81049714² = 13138112278963592, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 81049714.

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, 431022 + ... + 431209.

It is an arithmetic number, because the mean of its divisors is an integer number (15520176).

Almost surely, 2^81049714 is an apocalyptic number.

81049714 is a deficient number, since it is larger than the sum of its proper divisors (43111694).

81049714 is a wasteful number, since it uses less digits than its factorization.

81049714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862280.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 81049714 is about 9002.7614652394. The cubic root of 81049714 is about 432.7633715014.

The spelling of 81049714 in words is "eighty-one million, forty-nine thousand, seven hundred fourteen".