28889141 has 2 divisors, whose sum is σ = 28889142. Its totient is φ = 28889140.

The previous prime is 28889129. The next prime is 28889153. The reversal of 28889141 is 14198882.

It is a balanced prime because it is at equal distance from previous prime (28889129) and next prime (28889153).

It can be written as a sum of positive squares in only one way, i.e., 27144100 + 1745041 = 5210^2 + 1321^2 .

It is a cyclic number.

It is not a de Polignac number, because 28889141 - 2²² = 24694837 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 (28889041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14444570 + 14444571.

It is an arithmetic number, because the mean of its divisors is an integer number (14444571).

Almost surely, 2^28889141 is an apocalyptic number.

It is an amenable number.

28889141 is a deficient number, since it is larger than the sum of its proper divisors (1).

28889141 is an equidigital number, since it uses as much as digits as its factorization.

28889141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 41.

The square root of 28889141 is about 5374.8619517156. The cubic root of 28889141 is about 306.8396953341.

The spelling of 28889141 in words is "twenty-eight million, eight hundred eighty-nine thousand, one hundred forty-one".