7987340 has 24 divisors (see below), whose sum is σ = 17050992. Its totient is φ = 3142080.

The previous prime is 7987327. The next prime is 7987351. The reversal of 7987340 is 437897.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7987294 and 7987303.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2054 + ... + 4493.

It is an arithmetic number, because the mean of its divisors is an integer number (710458).

Almost surely, 2^7987340 is an apocalyptic number.

It is an amenable number.

7987340 is an abundant number, since it is smaller than the sum of its proper divisors (9063652).

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

7987340 is a wasteful number, since it uses less digits than its factorization.

7987340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6617 (or 6615 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 7987340 is about 2826.1882456765. The cubic root of 7987340 is about 199.8944442998.

The spelling of 7987340 in words is "seven million, nine hundred eighty-seven thousand, three hundred forty".