28652307 has 4 divisors (see below), whose sum is σ = 38203080. Its totient is φ = 19101536.

The previous prime is 28652297. The next prime is 28652329. The reversal of 28652307 is 70325682.

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

It is a cyclic number.

It is not a de Polignac number, because 28652307 - 2⁴ = 28652291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28652207) 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 in 3 ways as a sum of consecutive naturals, for example, 4775382 + ... + 4775387.

It is an arithmetic number, because the mean of its divisors is an integer number (9550770).

Almost surely, 2^28652307 is an apocalyptic number.

28652307 is a deficient number, since it is larger than the sum of its proper divisors (9550773).

28652307 is an equidigital number, since it uses as much as digits as its factorization.

28652307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9550772.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 28652307 is about 5352.7849760662. The cubic root of 28652307 is about 305.9988999918.

Adding to 28652307 its reverse (70325682), we get a palindrome (98977989).

The spelling of 28652307 in words is "twenty-eight million, six hundred fifty-two thousand, three hundred seven".