82681998 has 32 divisors (see below), whose sum is σ = 189263616. Its totient is φ = 23588928.

The previous prime is 82681997. The next prime is 82682029. The reversal of 82681998 is 89918628.

It is a self number, because there is not a number n which added to its sum of digits gives 82681998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82681993) 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, 46290 + ... + 48042.

It is an arithmetic number, because the mean of its divisors is an integer number (5914488).

Almost surely, 2^82681998 is an apocalyptic number.

82681998 is an abundant number, since it is smaller than the sum of its proper divisors (106581618).

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

82681998 is a wasteful number, since it uses less digits than its factorization.

82681998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2888.

The product of its digits is 497664, while the sum is 51.

The square root of 82681998 is about 9092.9642031628. The cubic root of 82681998 is about 435.6492669340.

The spelling of 82681998 in words is "eighty-two million, six hundred eighty-one thousand, nine hundred ninety-eight".