82209798 has 24 divisors (see below), whose sum is σ = 194314536. Its totient is φ = 24912000.

The previous prime is 82209791. The next prime is 82209857. The reversal of 82209798 is 89790228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82209791) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 207403 + ... + 207798.

It is an arithmetic number, because the mean of its divisors is an integer number (8096439).

Almost surely, 2^82209798 is an apocalyptic number.

82209798 is an abundant number, since it is smaller than the sum of its proper divisors (112104738).

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

82209798 is a wasteful number, since it uses less digits than its factorization.

82209798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415220 (or 415217 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 82209798 is about 9066.9618947032. The cubic root of 82209798 is about 434.8183466661.

The spelling of 82209798 in words is "eighty-two million, two hundred nine thousand, seven hundred ninety-eight".