28364041 has 4 divisors (see below), whose sum is σ = 30032532. Its totient is φ = 26695552.

The previous prime is 28364027. The next prime is 28364071. The reversal of 28364041 is 14046382.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12531600 + 15832441 = 3540^2 + 3979^2 .

It is a cyclic number.

It is not a de Polignac number, because 28364041 - 2⁵ = 28364009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28364071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 834220 + ... + 834253.

It is an arithmetic number, because the mean of its divisors is an integer number (7508133).

Almost surely, 2^28364041 is an apocalyptic number.

It is an amenable number.

28364041 is a deficient number, since it is larger than the sum of its proper divisors (1668491).

28364041 is a wasteful number, since it uses less digits than its factorization.

28364041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668490.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 28364041 is about 5325.7901761147. The cubic root of 28364041 is about 304.9692381409.

The spelling of 28364041 in words is "twenty-eight million, three hundred sixty-four thousand, forty-one".