28766141 has 2 divisors, whose sum is σ = 28766142. Its totient is φ = 28766140.

The previous prime is 28766119. The next prime is 28766167. The reversal of 28766141 is 14166782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28622500 + 143641 = 5350^2 + 379^2 .

It is a cyclic number.

It is not a de Polignac number, because 28766141 - 2¹⁸ = 28503997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28766041) 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, 14383070 + 14383071.

It is an arithmetic number, because the mean of its divisors is an integer number (14383071).

Almost surely, 2^28766141 is an apocalyptic number.

It is an amenable number.

28766141 is a deficient number, since it is larger than the sum of its proper divisors (1).

28766141 is an equidigital number, since it uses as much as digits as its factorization.

28766141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 35.

The square root of 28766141 is about 5363.4075921936. The cubic root of 28766141 is about 306.4036033010.

The spelling of 28766141 in words is "twenty-eight million, seven hundred sixty-six thousand, one hundred forty-one".