16533282728 has 8 divisors (see below), whose sum is σ = 30999905130. Its totient is φ = 8266641360.

The previous prime is 16533282709. The next prime is 16533282739. The reversal of 16533282728 is 82728233561.

It can be written as a sum of positive squares in only one way, i.e., 9436568164 + 7096714564 = 97142^2 + 84242^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1033330163 + ... + 1033330178.

Almost surely, 2^16533282728 is an apocalyptic number.

It is an amenable number.

16533282728 is a deficient number, since it is larger than the sum of its proper divisors (14466622402).

16533282728 is a wasteful number, since it uses less digits than its factorization.

16533282728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066660347 (or 2066660343 counting only the distinct ones).

The product of its digits is 967680, while the sum is 47.

The spelling of 16533282728 in words is "sixteen billion, five hundred thirty-three million, two hundred eighty-two thousand, seven hundred twenty-eight".