82867980 has 96 divisors (see below), whose sum is σ = 252096768. Its totient is φ = 20217600.

The previous prime is 82867943. The next prime is 82867997. The reversal of 82867980 is 8976828.

It is a happy 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 in 31 ways as a sum of consecutive naturals, for example, 101775 + ... + 102585.

It is an arithmetic number, because the mean of its divisors is an integer number (2626008).

Almost surely, 2^82867980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82867980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126048384).

82867980 is an abundant number, since it is smaller than the sum of its proper divisors (169228788).

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

82867980 is a wasteful number, since it uses less digits than its factorization.

82867980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967 (or 965 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 82867980 is about 9103.1851568558. The cubic root of 82867980 is about 435.9756670762.

The spelling of 82867980 in words is "eighty-two million, eight hundred sixty-seven thousand, nine hundred eighty".