16820103 has 8 divisors (see below), whose sum is σ = 22521600. Its totient is φ = 11166008.

The previous prime is 16820099. The next prime is 16820119. The reversal of 16820103 is 30102861.

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

It is a cyclic number.

It is not a de Polignac number, because 16820103 - 2² = 16820099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16820103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16820173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11013 + ... + 12446.

It is an arithmetic number, because the mean of its divisors is an integer number (2815200).

Almost surely, 2^16820103 is an apocalyptic number.

16820103 is a deficient number, since it is larger than the sum of its proper divisors (5701497).

16820103 is a wasteful number, since it uses less digits than its factorization.

16820103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23701.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 16820103 is about 4101.2318881039. The cubic root of 16820103 is about 256.2179489558.

Adding to 16820103 its reverse (30102861), we get a palindrome (46922964).

The spelling of 16820103 in words is "sixteen million, eight hundred twenty thousand, one hundred three".