16340505 has 16 divisors (see below), whose sum is σ = 26391744. Its totient is φ = 8632640.

The previous prime is 16340501. The next prime is 16340549. The reversal of 16340505 is 50504361.

It is not a de Polignac number, because 16340505 - 2² = 16340501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16340501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3486 + ... + 6695.

It is an arithmetic number, because the mean of its divisors is an integer number (1649484).

Almost surely, 2^16340505 is an apocalyptic number.

16340505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16340505 is a deficient number, since it is larger than the sum of its proper divisors (10051239).

16340505 is a wasteful number, since it uses less digits than its factorization.

16340505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10296.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 16340505 is about 4042.3390505993. The cubic root of 16340505 is about 253.7592165030.

Adding to 16340505 its reverse (50504361), we get a palindrome (66844866).

The spelling of 16340505 in words is "sixteen million, three hundred forty thousand, five hundred five".