28508141 has 2 divisors, whose sum is σ = 28508142. Its totient is φ = 28508140.

The previous prime is 28508107. The next prime is 28508147. The reversal of 28508141 is 14180582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26739241 + 1768900 = 5171^2 + 1330^2 .

It is a cyclic number.

It is not a de Polignac number, because 28508141 - 2¹⁰ = 28507117 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 (28508147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14254070 + 14254071.

It is an arithmetic number, because the mean of its divisors is an integer number (14254071).

Almost surely, 2^28508141 is an apocalyptic number.

It is an amenable number.

28508141 is a deficient number, since it is larger than the sum of its proper divisors (1).

28508141 is an equidigital number, since it uses as much as digits as its factorization.

28508141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 28508141 is about 5339.3015460826. The cubic root of 28508141 is about 305.4848188334.

The spelling of 28508141 in words is "twenty-eight million, five hundred eight thousand, one hundred forty-one".