28605838237 has 2 divisors, whose sum is σ = 28605838238. Its totient is φ = 28605838236.

The previous prime is 28605838229. The next prime is 28605838259. The reversal of 28605838237 is 73283850682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24464400921 + 4141437316 = 156411^2 + 64354^2 .

It is a cyclic number.

It is not a de Polignac number, because 28605838237 - 2³ = 28605838229 is a prime.

It is a super-2 number, since 2×28605838237² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28605833237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14302919118 + 14302919119.

It is an arithmetic number, because the mean of its divisors is an integer number (14302919119).

Almost surely, 2^28605838237 is an apocalyptic number.

It is an amenable number.

28605838237 is a deficient number, since it is larger than the sum of its proper divisors (1).

28605838237 is an equidigital number, since it uses as much as digits as its factorization.

28605838237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 28605838237 in words is "twenty-eight billion, six hundred five million, eight hundred thirty-eight thousand, two hundred thirty-seven".