81829262 has 32 divisors (see below), whose sum is σ = 136468800. Its totient is φ = 36602368.

The previous prime is 81829261. The next prime is 81829273. The reversal of 81829262 is 26292818.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81829261) 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 15 ways as a sum of consecutive naturals, for example, 210164 + ... + 210552.

It is an arithmetic number, because the mean of its divisors is an integer number (4264650).

Almost surely, 2^81829262 is an apocalyptic number.

81829262 is a deficient number, since it is larger than the sum of its proper divisors (54639538).

81829262 is a wasteful number, since it uses less digits than its factorization.

81829262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700.

The product of its digits is 27648, while the sum is 38.

The square root of 81829262 is about 9045.9527966931. The cubic root of 81829262 is about 434.1464073144.

The spelling of 81829262 in words is "eighty-one million, eight hundred twenty-nine thousand, two hundred sixty-two".