7998340 has 24 divisors (see below), whose sum is σ = 19196352. Its totient is φ = 2742240.

The previous prime is 7998337. The next prime is 7998349. The reversal of 7998340 is 438997.

7998340 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 7998293 and 7998302.

It is not an unprimeable number, because it can be changed into a prime (7998349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28426 + ... + 28705.

It is an arithmetic number, because the mean of its divisors is an integer number (799848).

Almost surely, 2^7998340 is an apocalyptic number.

7998340 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7998340 is an abundant number, since it is smaller than the sum of its proper divisors (11198012).

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

7998340 is a wasteful number, since it uses less digits than its factorization.

7998340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57147 (or 57145 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 7998340 is about 2828.1336602077. The cubic root of 7998340 is about 199.9861657098.

It can be divided in two parts, 7998 and 340, that added together give a palindrome (8338).

The spelling of 7998340 in words is "seven million, nine hundred ninety-eight thousand, three hundred forty".