82197850 has 24 divisors (see below), whose sum is σ = 174729888. Its totient is φ = 28182000.

The previous prime is 82197847. The next prime is 82197851. The reversal of 82197850 is 5879128.

It is not an unprimeable number, because it can be changed into a prime (82197851) 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, 117076 + ... + 117775.

It is an arithmetic number, because the mean of its divisors is an integer number (7280412).

Almost surely, 2^82197850 is an apocalyptic number.

82197850 is an abundant number, since it is smaller than the sum of its proper divisors (92532038).

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

82197850 is a wasteful number, since it uses less digits than its factorization.

82197850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234870 (or 234865 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 82197850 is about 9066.3029951574. The cubic root of 82197850 is about 434.7972808020.

The spelling of 82197850 in words is "eighty-two million, one hundred ninety-seven thousand, eight hundred fifty".