81832227 has 8 divisors (see below), whose sum is σ = 110075664. Its totient is φ = 54071808.

The previous prime is 81832213. The next prime is 81832243. The reversal of 81832227 is 72223818.

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

It is not a de Polignac number, because 81832227 - 2⁴ = 81832211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81832277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120358 + ... + 121035.

It is an arithmetic number, because the mean of its divisors is an integer number (13759458).

Almost surely, 2^81832227 is an apocalyptic number.

81832227 is a deficient number, since it is larger than the sum of its proper divisors (28243437).

81832227 is a wasteful number, since it uses less digits than its factorization.

81832227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241509.

The product of its digits is 10752, while the sum is 33.

The square root of 81832227 is about 9046.1166806536. The cubic root of 81832227 is about 434.1516508688.

The spelling of 81832227 in words is "eighty-one million, eight hundred thirty-two thousand, two hundred twenty-seven".