7982840 has 32 divisors (see below), whose sum is σ = 18744480. Its totient is φ = 3053952.

The previous prime is 7982797. The next prime is 7982851. The reversal of 7982840 is 482897.

It is a junction number, because it is equal to n+sod(n) for n = 7982794 and 7982803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3419 + ... + 5258.

It is an arithmetic number, because the mean of its divisors is an integer number (585765).

Almost surely, 2^7982840 is an apocalyptic number.

It is an amenable number.

7982840 is an abundant number, since it is smaller than the sum of its proper divisors (10761640).

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

7982840 is a wasteful number, since it uses less digits than its factorization.

7982840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8711 (or 8707 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 7982840 is about 2825.3920081999. The cubic root of 7982840 is about 199.8568976330.

The spelling of 7982840 in words is "seven million, nine hundred eighty-two thousand, eight hundred forty".