7901982 has 64 divisors (see below), whose sum is σ = 19595520. Its totient is φ = 2340000.

The previous prime is 7901947. The next prime is 7901983. The reversal of 7901982 is 2891097.

It is a happy number.

7901982 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7901983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31357 + ... + 31607.

It is an arithmetic number, because the mean of its divisors is an integer number (306180).

Almost surely, 2^7901982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7901982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9797760).

7901982 is an abundant number, since it is smaller than the sum of its proper divisors (11693538).

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

7901982 is a wasteful number, since it uses less digits than its factorization.

7901982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 320 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 7901982 is about 2811.0464243765. The cubic root of 7901982 is about 199.1798244917.

It can be divided in two parts, 790 and 1982, that added together give a palindrome (2772).

The spelling of 7901982 in words is "seven million, nine hundred one thousand, nine hundred eighty-two".