16250728 has 16 divisors (see below), whose sum is σ = 32814180. Its totient is φ = 7500288.

The previous prime is 16250687. The next prime is 16250737. The reversal of 16250728 is 82705261.

It can be written as a sum of positive squares in 2 ways, for example, as 12945604 + 3305124 = 3598^2 + 1818^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16250728.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78025 + ... + 78232.

Almost surely, 2^16250728 is an apocalyptic number.

It is an amenable number.

16250728 is an abundant number, since it is smaller than the sum of its proper divisors (16563452).

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

16250728 is a wasteful number, since it uses less digits than its factorization.

16250728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156276 (or 156272 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 16250728 is about 4031.2191704247. The cubic root of 16250728 is about 253.2936333603.

Adding to 16250728 its reverse (82705261), we get a palindrome (98955989).

The spelling of 16250728 in words is "sixteen million, two hundred fifty thousand, seven hundred twenty-eight".