16530393 has 8 divisors (see below), whose sum is σ = 24044256. Its totient is φ = 10018400.

The previous prime is 16530389. The next prime is 16530401. The reversal of 16530393 is 39303561.

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

It is a cyclic number.

It is not a de Polignac number, because 16530393 - 2² = 16530389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16530393.

It is not an unprimeable number, because it can be changed into a prime (16530343) 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, 250428 + ... + 250493.

It is an arithmetic number, because the mean of its divisors is an integer number (3005532).

Almost surely, 2^16530393 is an apocalyptic number.

It is an amenable number.

16530393 is a deficient number, since it is larger than the sum of its proper divisors (7513863).

16530393 is a wasteful number, since it uses less digits than its factorization.

16530393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500935.

The product of its (nonzero) digits is 7290, while the sum is 30.

The square root of 16530393 is about 4065.7586008026. The cubic root of 16530393 is about 254.7383860561.

The spelling of 16530393 in words is "sixteen million, five hundred thirty thousand, three hundred ninety-three".