82840086940 has 48 divisors (see below), whose sum is σ = 189097003872. Its totient is φ = 30301238016.

The previous prime is 82840086919. The next prime is 82840086941. The reversal of 82840086940 is 4968004828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82840086941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1461039 + ... + 1516678.

It is an arithmetic number, because the mean of its divisors is an integer number (3939520914).

Almost surely, 2^82840086940 is an apocalyptic number.

It is an amenable number.

82840086940 is an abundant number, since it is smaller than the sum of its proper divisors (106256916932).

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

82840086940 is a wasteful number, since it uses less digits than its factorization.

82840086940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2977846 (or 2977844 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 49.

The spelling of 82840086940 in words is "eighty-two billion, eight hundred forty million, eighty-six thousand, nine hundred forty".