28890941 has 2 divisors, whose sum is σ = 28890942. Its totient is φ = 28890940.

The previous prime is 28890919. The next prime is 28890959. The reversal of 28890941 is 14909882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28665316 + 225625 = 5354^2 + 475^2 .

It is a cyclic number.

It is not a de Polignac number, because 28890941 - 2¹⁸ = 28628797 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 (28890541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14445470 + 14445471.

It is an arithmetic number, because the mean of its divisors is an integer number (14445471).

Almost surely, 2^28890941 is an apocalyptic number.

It is an amenable number.

28890941 is a deficient number, since it is larger than the sum of its proper divisors (1).

28890941 is an equidigital number, since it uses as much as digits as its factorization.

28890941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 28890941 is about 5375.0293952685. The cubic root of 28890941 is about 306.8460679706.

The spelling of 28890941 in words is "twenty-eight million, eight hundred ninety thousand, nine hundred forty-one".