82191498 has 16 divisors (see below), whose sum is σ = 174052800. Its totient is φ = 25785536.

The previous prime is 82191493. The next prime is 82191523. The reversal of 82191498 is 89419128.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82191491) 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, 402798 + ... + 403001.

It is an arithmetic number, because the mean of its divisors is an integer number (10878300).

Almost surely, 2^82191498 is an apocalyptic number.

82191498 is an abundant number, since it is smaller than the sum of its proper divisors (91861302).

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

82191498 is a wasteful number, since it uses less digits than its factorization.

82191498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805821.

The product of its digits is 41472, while the sum is 42.

The square root of 82191498 is about 9065.9526802207. The cubic root of 82191498 is about 434.7860805760.

The spelling of 82191498 in words is "eighty-two million, one hundred ninety-one thousand, four hundred ninety-eight".