7688140 has 12 divisors (see below), whose sum is σ = 16145136. Its totient is φ = 3075248.

The previous prime is 7688129. The next prime is 7688143. The reversal of 7688140 is 418867.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 7688096 and 7688105.

It is not an unprimeable number, because it can be changed into a prime (7688143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192184 + ... + 192223.

It is an arithmetic number, because the mean of its divisors is an integer number (1345428).

Almost surely, 2^7688140 is an apocalyptic number.

It is an amenable number.

7688140 is an abundant number, since it is smaller than the sum of its proper divisors (8456996).

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

7688140 is a wasteful number, since it uses less digits than its factorization.

7688140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384416 (or 384414 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 7688140 is about 2772.7495379136. The cubic root of 7688140 is about 197.3666460784.

The spelling of 7688140 in words is "seven million, six hundred eighty-eight thousand, one hundred forty".