16340403 has 8 divisors (see below), whose sum is σ = 21926608. Its totient is φ = 10823904.

The previous prime is 16340381. The next prime is 16340407. The reversal of 16340403 is 30404361.

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

It is not a de Polignac number, because 16340403 - 2⁵ = 16340371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16340403.

It is not an unprimeable number, because it can be changed into a prime (16340407) 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, 16876 + ... + 17817.

It is an arithmetic number, because the mean of its divisors is an integer number (2740826).

Almost surely, 2^16340403 is an apocalyptic number.

16340403 is a deficient number, since it is larger than the sum of its proper divisors (5586205).

16340403 is a wasteful number, since it uses less digits than its factorization.

16340403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34853.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 16340403 is about 4042.3264341218. The cubic root of 16340403 is about 253.7586885003.

Adding to 16340403 its reverse (30404361), we get a palindrome (46744764).

The spelling of 16340403 in words is "sixteen million, three hundred forty thousand, four hundred three".