28680562 has 4 divisors (see below), whose sum is σ = 43020846. Its totient is φ = 14340280.

The previous prime is 28680551. The next prime is 28680569. The reversal of 28680562 is 26508682.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 23532201 + 5148361 = 4851^2 + 2269^2 .

It is not an unprimeable number, because it can be changed into a prime (28680569) by changing a digit.

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 as a sum of consecutive naturals, namely, 7170139 + ... + 7170142.

Almost surely, 2^28680562 is an apocalyptic number.

28680562 is a deficient number, since it is larger than the sum of its proper divisors (14340284).

28680562 is a wasteful number, since it uses less digits than its factorization.

28680562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14340283.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 28680562 is about 5355.4236060278. The cubic root of 28680562 is about 306.0994522026.

The spelling of 28680562 in words is "twenty-eight million, six hundred eighty thousand, five hundred sixty-two".