16556434 has 8 divisors (see below), whose sum is σ = 24893568. Its totient is φ = 8258580.

The previous prime is 16556381. The next prime is 16556443. The reversal of 16556434 is 43465561.

16556434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 16556434.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8742 + ... + 10465.

It is an arithmetic number, because the mean of its divisors is an integer number (3111696).

Almost surely, 2^16556434 is an apocalyptic number.

16556434 is a deficient number, since it is larger than the sum of its proper divisors (8337134).

16556434 is a wasteful number, since it uses less digits than its factorization.

16556434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19640.

The product of its digits is 43200, while the sum is 34.

The square root of 16556434 is about 4068.9598179387. The cubic root of 16556434 is about 254.8720824528.

The spelling of 16556434 in words is "sixteen million, five hundred fifty-six thousand, four hundred thirty-four".