28928941 has 2 divisors, whose sum is σ = 28928942. Its totient is φ = 28928940.

The previous prime is 28928897. The next prime is 28928947. The reversal of 28928941 is 14982982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19802500 + 9126441 = 4450^2 + 3021^2 .

It is a cyclic number.

It is not a de Polignac number, because 28928941 - 2⁷ = 28928813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28928947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14464470 + 14464471.

It is an arithmetic number, because the mean of its divisors is an integer number (14464471).

Almost surely, 2^28928941 is an apocalyptic number.

It is an amenable number.

28928941 is a deficient number, since it is larger than the sum of its proper divisors (1).

28928941 is an equidigital number, since it uses as much as digits as its factorization.

28928941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 43.

The square root of 28928941 is about 5378.5630980774. The cubic root of 28928941 is about 306.9805396741.

The spelling of 28928941 in words is "twenty-eight million, nine hundred twenty-eight thousand, nine hundred forty-one".