28584737 has 2 divisors, whose sum is σ = 28584738. Its totient is φ = 28584736.

The previous prime is 28584727. The next prime is 28584739. The reversal of 28584737 is 73748582.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26635921 + 1948816 = 5161^2 + 1396^2 .

It is a cyclic number.

It is not a de Polignac number, because 28584737 - 2⁸ = 28584481 is a prime.

Together with 28584739, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28584739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14292368 + 14292369.

It is an arithmetic number, because the mean of its divisors is an integer number (14292369).

Almost surely, 2^28584737 is an apocalyptic number.

It is an amenable number.

28584737 is a deficient number, since it is larger than the sum of its proper divisors (1).

28584737 is an equidigital number, since it uses as much as digits as its factorization.

28584737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 376320, while the sum is 44.

The square root of 28584737 is about 5346.4695828182. The cubic root of 28584737 is about 305.7581675381.

The spelling of 28584737 in words is "twenty-eight million, five hundred eighty-four thousand, seven hundred thirty-seven".