28541147 has 4 divisors (see below), whose sum is σ = 30220056. Its totient is φ = 26862240.

The previous prime is 28541087. The next prime is 28541159. The reversal of 28541147 is 74114582.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28541147 - 2¹⁴ = 28524763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28541167) 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 in 3 ways as a sum of consecutive naturals, for example, 839429 + ... + 839462.

It is an arithmetic number, because the mean of its divisors is an integer number (7555014).

Almost surely, 2^28541147 is an apocalyptic number.

28541147 is a deficient number, since it is larger than the sum of its proper divisors (1678909).

28541147 is a wasteful number, since it uses less digits than its factorization.

28541147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678908.

The product of its digits is 8960, while the sum is 32.

The square root of 28541147 is about 5342.3915056836. The cubic root of 28541147 is about 305.6026675468.

The spelling of 28541147 in words is "twenty-eight million, five hundred forty-one thousand, one hundred forty-seven".