16840684 has 24 divisors (see below), whose sum is σ = 33931520. Its totient is φ = 7163856.

The previous prime is 16840633. The next prime is 16840721. The reversal of 16840684 is 48604861.

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 7 ways as a sum of consecutive naturals, for example, 1729 + ... + 6055.

Almost surely, 2^16840684 is an apocalyptic number.

16840684 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16840684 is an abundant number, since it is smaller than the sum of its proper divisors (17090836).

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

16840684 is a wasteful number, since it uses less digits than its factorization.

16840684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4477 (or 4475 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 16840684 is about 4103.7402451910. The cubic root of 16840684 is about 256.3224087265.

It can be divided in two parts, 168406 and 84, that added together give a triangular number (168490 = T₅₈₀).

The spelling of 16840684 in words is "sixteen million, eight hundred forty thousand, six hundred eighty-four".