82198012 has 24 divisors (see below), whose sum is σ = 157230416. Its totient is φ = 37369728.

The previous prime is 82198001. The next prime is 82198027. The reversal of 82198012 is 21089128.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8313 + ... + 15280.

Almost surely, 2^82198012 is an apocalyptic number.

It is an amenable number.

82198012 is a deficient number, since it is larger than the sum of its proper divisors (75032404).

82198012 is a wasteful number, since it uses less digits than its factorization.

82198012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23677 (or 23675 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 82198012 is about 9066.3119293349. The cubic root of 82198012 is about 434.7975664425.

The spelling of 82198012 in words is "eighty-two million, one hundred ninety-eight thousand, twelve".