16530396 has 12 divisors (see below), whose sum is σ = 38570952. Its totient is φ = 5510128.

The previous prime is 16530389. The next prime is 16530401. The reversal of 16530396 is 69303561.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 688755 + ... + 688778.

It is an arithmetic number, because the mean of its divisors is an integer number (3214246).

Almost surely, 2^16530396 is an apocalyptic number.

It is an amenable number.

16530396 is an abundant number, since it is smaller than the sum of its proper divisors (22040556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16530396 is a wasteful number, since it uses less digits than its factorization.

16530396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377540 (or 1377538 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 33.

The square root of 16530396 is about 4065.7589697374. The cubic root of 16530396 is about 254.7384014664.

The spelling of 16530396 in words is "sixteen million, five hundred thirty thousand, three hundred ninety-six".