7840828 has 12 divisors (see below), whose sum is σ = 13744080. Its totient is φ = 3913952.

The previous prime is 7840823. The next prime is 7840837. The reversal of 7840828 is 8280487.

7840828 is nontrivially palindromic in base 6.

It is a super-2 number, since 2×7840828² = 122957167451168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7840823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2025 + ... + 4447.

It is an arithmetic number, because the mean of its divisors is an integer number (1145340).

Almost surely, 2^7840828 is an apocalyptic number.

It is an amenable number.

7840828 is a deficient number, since it is larger than the sum of its proper divisors (5903252).

7840828 is a wasteful number, since it uses less digits than its factorization.

7840828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3236 (or 3234 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 7840828 is about 2800.1478532392. The cubic root of 7840828 is about 198.6646709908.

It can be divided in two parts, 7840 and 828, that added together give a palindrome (8668).

The spelling of 7840828 in words is "seven million, eight hundred forty thousand, eight hundred twenty-eight".