81834798 has 16 divisors (see below), whose sum is σ = 163846656. Its totient is φ = 27248760.

The previous prime is 81834791. The next prime is 81834803. The reversal of 81834798 is 89743818.

It is a super-3 number, since 3×81834798³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81834791) 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 7 ways as a sum of consecutive naturals, for example, 936 + ... + 12827.

It is an arithmetic number, because the mean of its divisors is an integer number (10240416).

Almost surely, 2^81834798 is an apocalyptic number.

81834798 is an abundant number, since it is smaller than the sum of its proper divisors (82011858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81834798 is a wasteful number, since it uses less digits than its factorization.

81834798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14759.

The product of its digits is 387072, while the sum is 48.

The square root of 81834798 is about 9046.2587847132. The cubic root of 81834798 is about 434.1561975380.

The spelling of 81834798 in words is "eighty-one million, eight hundred thirty-four thousand, seven hundred ninety-eight".