16320357 has 12 divisors (see below), whose sum is σ = 24960780. Its totient is φ = 10240128.

The previous prime is 16320341. The next prime is 16320371. The reversal of 16320357 is 75302361.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6548481 + 9771876 = 2559^2 + 3126^2 .

It is not a de Polignac number, because 16320357 - 2⁴ = 16320341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16320357.

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53182 + ... + 53487.

It is an arithmetic number, because the mean of its divisors is an integer number (2080065).

Almost surely, 2^16320357 is an apocalyptic number.

16320357 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16320357 is a deficient number, since it is larger than the sum of its proper divisors (8640423).

16320357 is a wasteful number, since it uses less digits than its factorization.

16320357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106692 (or 106689 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 16320357 is about 4039.8461604373. The cubic root of 16320357 is about 253.6548777552.

The spelling of 16320357 in words is "sixteen million, three hundred twenty thousand, three hundred fifty-seven".