28822537 has 2 divisors, whose sum is σ = 28822538. Its totient is φ = 28822536.

The previous prime is 28822511. The next prime is 28822559. The reversal of 28822537 is 73522882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17673616 + 11148921 = 4204^2 + 3339^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28822537 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28822496 and 28822505.

It is not a weakly prime, because it can be changed into another prime (28822567) 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, 14411268 + 14411269.

It is an arithmetic number, because the mean of its divisors is an integer number (14411269).

Almost surely, 2^28822537 is an apocalyptic number.

It is an amenable number.

28822537 is a deficient number, since it is larger than the sum of its proper divisors (1).

28822537 is an equidigital number, since it uses as much as digits as its factorization.

28822537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 37.

The square root of 28822537 is about 5368.6624963765. The cubic root of 28822537 is about 306.6037072758.

The spelling of 28822537 in words is "twenty-eight million, eight hundred twenty-two thousand, five hundred thirty-seven".