82198894 has 4 divisors (see below), whose sum is σ = 123298344. Its totient is φ = 41099446.

The previous prime is 82198873. The next prime is 82198931. The reversal of 82198894 is 49889128.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 20549722 + ... + 20549725.

It is an arithmetic number, because the mean of its divisors is an integer number (30824586).

Almost surely, 2^82198894 is an apocalyptic number.

82198894 is a deficient number, since it is larger than the sum of its proper divisors (41099450).

82198894 is a wasteful number, since it uses less digits than its factorization.

82198894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41099449.

The product of its digits is 331776, while the sum is 49.

The square root of 82198894 is about 9066.3605708134. The cubic root of 82198894 is about 434.7991215899.

The spelling of 82198894 in words is "eighty-two million, one hundred ninety-eight thousand, eight hundred ninety-four".