1684671828 has 48 divisors (see below), whose sum is σ = 4647377280. Its totient is φ = 464736384.

The previous prime is 1684671809. The next prime is 1684671839. The reversal of 1684671828 is 8281764861.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 343351 + ... + 348222.

It is an arithmetic number, because the mean of its divisors is an integer number (96820360).

Almost surely, 2^1684671828 is an apocalyptic number.

It is an amenable number.

1684671828 is an abundant number, since it is smaller than the sum of its proper divisors (2962705452).

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

1684671828 is a wasteful number, since it uses less digits than its factorization.

1684671828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691616 (or 691614 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 51.

The square root of 1684671828 is about 41044.7539644228. The cubic root of 1684671828 is about 1189.8853143719.

The spelling of 1684671828 in words is "one billion, six hundred eighty-four million, six hundred seventy-one thousand, eight hundred twenty-eight".