16403013 has 16 divisors (see below), whose sum is σ = 26510400. Its totient is φ = 9941040.

The previous prime is 16402949. The next prime is 16403017. The reversal of 16403013 is 31030461.

16403013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16403013 - 2⁶ = 16402949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16403017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27318 + ... + 27911.

It is an arithmetic number, because the mean of its divisors is an integer number (1656900).

Almost surely, 2^16403013 is an apocalyptic number.

It is an amenable number.

16403013 is a deficient number, since it is larger than the sum of its proper divisors (10107387).

16403013 is a wasteful number, since it uses less digits than its factorization.

16403013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55249 (or 55243 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 16403013 is about 4050.0633328381. The cubic root of 16403013 is about 254.0823766124.

Adding to 16403013 its reverse (31030461), we get a palindrome (47433474).

The spelling of 16403013 in words is "sixteen million, four hundred three thousand, thirteen".