7687828 has 12 divisors (see below), whose sum is σ = 13782132. Its totient is φ = 3750080.

The previous prime is 7687811. The next prime is 7687829. The reversal of 7687828 is 8287867.

It can be written as a sum of positive squares in 2 ways, for example, as 300304 + 7387524 = 548^2 + 2718^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7687829) 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, 23275 + ... + 23602.

It is an arithmetic number, because the mean of its divisors is an integer number (1148511).

Almost surely, 2^7687828 is an apocalyptic number.

It is an amenable number.

7687828 is a deficient number, since it is larger than the sum of its proper divisors (6094304).

7687828 is a wasteful number, since it uses less digits than its factorization.

7687828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46922 (or 46920 counting only the distinct ones).

The product of its digits is 301056, while the sum is 46.

The square root of 7687828 is about 2772.6932754995. The cubic root of 7687828 is about 197.3639761987.

It can be divided in two parts, 7687 and 828, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 7687828 in words is "seven million, six hundred eighty-seven thousand, eight hundred twenty-eight".