28931041 has 2 divisors, whose sum is σ = 28931042. Its totient is φ = 28931040.

The previous prime is 28931027. The next prime is 28931047. The reversal of 28931041 is 14013982.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26306641 + 2624400 = 5129^2 + 1620^2 .

It is a cyclic number.

It is not a de Polignac number, because 28931041 - 2¹⁵ = 28898273 is a prime.

It is not a weakly prime, because it can be changed into another prime (28931047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14465520 + 14465521.

It is an arithmetic number, because the mean of its divisors is an integer number (14465521).

Almost surely, 2^28931041 is an apocalyptic number.

It is an amenable number.

28931041 is a deficient number, since it is larger than the sum of its proper divisors (1).

28931041 is an equidigital number, since it uses as much as digits as its factorization.

28931041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 28931041 is about 5378.7583139606. The cubic root of 28931041 is about 306.9879675705.

The spelling of 28931041 in words is "twenty-eight million, nine hundred thirty-one thousand, forty-one".