16643234 has 8 divisors (see below), whose sum is σ = 24987648. Its totient is φ = 8314020.

The previous prime is 16643233. The next prime is 16643239. The reversal of 16643234 is 43234661.

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

It is a junction number, because it is equal to n+sod(n) for n = 16643197 and 16643206.

It is not an unprimeable number, because it can be changed into a prime (16643233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 482 + ... + 5789.

It is an arithmetic number, because the mean of its divisors is an integer number (3123456).

Almost surely, 2^16643234 is an apocalyptic number.

16643234 is a deficient number, since it is larger than the sum of its proper divisors (8344414).

16643234 is a wasteful number, since it uses less digits than its factorization.

16643234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7600.

The product of its digits is 10368, while the sum is 29.

The square root of 16643234 is about 4079.6119913541. The cubic root of 16643234 is about 255.3167101610.

Adding to 16643234 its reverse (43234661), we get a palindrome (59877895).

The spelling of 16643234 in words is "sixteen million, six hundred forty-three thousand, two hundred thirty-four".