16557834 has 16 divisors (see below), whose sum is σ = 33264288. Its totient is φ = 5494512.

The previous prime is 16557817. The next prime is 16557841. The reversal of 16557834 is 43875561.

It is a junction number, because it is equal to n+sod(n) for n = 16557792 and 16557801.

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, 4717 + ... + 7440.

It is an arithmetic number, because the mean of its divisors is an integer number (2079018).

Almost surely, 2^16557834 is an apocalyptic number.

16557834 is an abundant number, since it is smaller than the sum of its proper divisors (16706454).

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

16557834 is a wasteful number, since it uses less digits than its factorization.

16557834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12389.

The product of its digits is 100800, while the sum is 39.

The square root of 16557834 is about 4069.1318484414. The cubic root of 16557834 is about 254.8792661828.

It can be divided in two parts, 16557 and 834, that added together give a triangular number (17391 = T₁₈₆).

The spelling of 16557834 in words is "sixteen million, five hundred fifty-seven thousand, eight hundred thirty-four".