81927341 has 12 divisors (see below), whose sum is σ = 85412160. Its totient is φ = 78561000.

The previous prime is 81927337. The next prime is 81927353. The reversal of 81927341 is 14372918.

It is not a de Polignac number, because 81927341 - 2² = 81927337 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81927371) 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 11 ways as a sum of consecutive naturals, for example, 108716 + ... + 109466.

It is an arithmetic number, because the mean of its divisors is an integer number (7117680).

Almost surely, 2^81927341 is an apocalyptic number.

It is an amenable number.

81927341 is a deficient number, since it is larger than the sum of its proper divisors (3484819).

81927341 is an equidigital number, since it uses as much as digits as its factorization.

81927341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896 (or 853 counting only the distinct ones).

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

The square root of 81927341 is about 9051.3723268905. The cubic root of 81927341 is about 434.3197912753.

The spelling of 81927341 in words is "eighty-one million, nine hundred twenty-seven thousand, three hundred forty-one".