28690852 has 12 divisors (see below), whose sum is σ = 50295196. Its totient is φ = 14320800.

The previous prime is 28690819. The next prime is 28690877. The reversal of 28690852 is 25809682.

It can be written as a sum of positive squares in 2 ways, for example, as 8386816 + 20304036 = 2896^2 + 4506^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3399 + ... + 8302.

Almost surely, 2^28690852 is an apocalyptic number.

It is an amenable number.

28690852 is a deficient number, since it is larger than the sum of its proper divisors (21604344).

28690852 is a wasteful number, since it uses less digits than its factorization.

28690852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12318 (or 12316 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 28690852 is about 5356.3842281898. The cubic root of 28690852 is about 306.1360552364.

The spelling of 28690852 in words is "twenty-eight million, six hundred ninety thousand, eight hundred fifty-two".