201616728 has 16 divisors (see below), whose sum is σ = 504041880. Its totient is φ = 67205568.

The previous prime is 201616703. The next prime is 201616741. The reversal of 201616728 is 827616102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4200325 + ... + 4200372.

Almost surely, 2^201616728 is an apocalyptic number.

It is an amenable number.

201616728 is an abundant number, since it is smaller than the sum of its proper divisors (302425152).

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

201616728 is a wasteful number, since it uses less digits than its factorization.

201616728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8400706 (or 8400702 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 201616728 is about 14199.1805397354. The cubic root of 201616728 is about 586.3751010449.

The spelling of 201616728 in words is "two hundred one million, six hundred sixteen thousand, seven hundred twenty-eight".