16890003 has 24 divisors (see below), whose sum is σ = 26426400. Its totient is φ = 10333440.

The previous prime is 16890001. The next prime is 16890011. The reversal of 16890003 is 30009861.

It is not a de Polignac number, because 16890003 - 2¹ = 16890001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16890001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27898 + ... + 28496.

It is an arithmetic number, because the mean of its divisors is an integer number (1101100).

Almost surely, 2^16890003 is an apocalyptic number.

16890003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

16890003 is a deficient number, since it is larger than the sum of its proper divisors (9536397).

16890003 is a wasteful number, since it uses less digits than its factorization.

16890003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859 (or 856 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 16890003 is about 4109.7448825931. The cubic root of 16890003 is about 256.5723836162.

Adding to 16890003 its reverse (30009861), we get a palindrome (46899864).

The spelling of 16890003 in words is "sixteen million, eight hundred ninety thousand, three".