28947601 has 2 divisors, whose sum is σ = 28947602. Its totient is φ = 28947600.

The previous prime is 28947577. The next prime is 28947619. The reversal of 28947601 is 10674982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28901376 + 46225 = 5376^2 + 215^2 .

It is a cyclic number.

It is not a de Polignac number, because 28947601 - 2¹⁹ = 28423313 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28947631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14473800 + 14473801.

It is an arithmetic number, because the mean of its divisors is an integer number (14473801).

Almost surely, 2^28947601 is an apocalyptic number.

It is an amenable number.

28947601 is a deficient number, since it is larger than the sum of its proper divisors (1).

28947601 is an equidigital number, since it uses as much as digits as its factorization.

28947601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 28947601 is about 5380.2974824818. The cubic root of 28947601 is about 307.0465292504.

The spelling of 28947601 in words is "twenty-eight million, nine hundred forty-seven thousand, six hundred one".