28141637 has 2 divisors, whose sum is σ = 28141638. Its totient is φ = 28141636.

The previous prime is 28141609. The next prime is 28141661. The reversal of 28141637 is 73614182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27730756 + 410881 = 5266^2 + 641^2 .

It is a cyclic number.

It is not a de Polignac number, because 28141637 - 2¹⁶ = 28076101 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28141697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14070818 + 14070819.

It is an arithmetic number, because the mean of its divisors is an integer number (14070819).

Almost surely, 2^28141637 is an apocalyptic number.

It is an amenable number.

28141637 is a deficient number, since it is larger than the sum of its proper divisors (1).

28141637 is an equidigital number, since it uses as much as digits as its factorization.

28141637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 32.

The square root of 28141637 is about 5304.8691784058. The cubic root of 28141637 is about 304.1700521631.

The spelling of 28141637 in words is "twenty-eight million, one hundred forty-one thousand, six hundred thirty-seven".