16320247 has 4 divisors (see below), whose sum is σ = 16478800. Its totient is φ = 16161696.

The previous prime is 16320223. The next prime is 16320253. The reversal of 16320247 is 74202361.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16320247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16320257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79122 + ... + 79327.

It is an arithmetic number, because the mean of its divisors is an integer number (4119700).

Almost surely, 2^16320247 is an apocalyptic number.

16320247 is a deficient number, since it is larger than the sum of its proper divisors (158553).

16320247 is a wasteful number, since it uses less digits than its factorization.

16320247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158552.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 16320247 is about 4039.8325460346. The cubic root of 16320247 is about 253.6543078719.

The spelling of 16320247 in words is "sixteen million, three hundred twenty thousand, two hundred forty-seven".