82128698 has 8 divisors (see below), whose sum is σ = 124389408. Its totient is φ = 40665564.

The previous prime is 82128647. The next prime is 82128707. The reversal of 82128698 is 89682128.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199136 + ... + 199547.

It is an arithmetic number, because the mean of its divisors is an integer number (15548676).

Almost surely, 2^82128698 is an apocalyptic number.

82128698 is a deficient number, since it is larger than the sum of its proper divisors (42260710).

82128698 is a wasteful number, since it uses less digits than its factorization.

82128698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398788.

The product of its digits is 110592, while the sum is 44.

The square root of 82128698 is about 9062.4885103375. The cubic root of 82128698 is about 434.6753167960.

The spelling of 82128698 in words is "eighty-two million, one hundred twenty-eight thousand, six hundred ninety-eight".