16344645 has 16 divisors (see below), whose sum is σ = 26581632. Its totient is φ = 8573760.

The previous prime is 16344641. The next prime is 16344683. The reversal of 16344645 is 54644361.

It is not a de Polignac number, because 16344645 - 2² = 16344641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16344641) 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, 8017 + ... + 9846.

It is an arithmetic number, because the mean of its divisors is an integer number (1661352).

Almost surely, 2^16344645 is an apocalyptic number.

16344645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16344645 is a deficient number, since it is larger than the sum of its proper divisors (10236987).

16344645 is a wasteful number, since it uses less digits than its factorization.

16344645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17932.

The product of its digits is 34560, while the sum is 33.

The square root of 16344645 is about 4042.8510979258. The cubic root of 16344645 is about 253.7806453480.

The spelling of 16344645 in words is "sixteen million, three hundred forty-four thousand, six hundred forty-five".