7678140 has 48 divisors (see below), whose sum is σ = 21805728. Its totient is φ = 2018304.

The previous prime is 7678093. The next prime is 7678171. The reversal of 7678140 is 418767.

7678140 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 an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3504 + ... + 5256.

It is an arithmetic number, because the mean of its divisors is an integer number (454286).

Almost surely, 2^7678140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7678140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10902864).

7678140 is an abundant number, since it is smaller than the sum of its proper divisors (14127588).

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

7678140 is a wasteful number, since it uses less digits than its factorization.

7678140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1838 (or 1836 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 7678140 is about 2770.9456869452. The cubic root of 7678140 is about 197.2810370408.

The spelling of 7678140 in words is "seven million, six hundred seventy-eight thousand, one hundred forty".