28563041 has 4 divisors (see below), whose sum is σ = 30760212. Its totient is φ = 26365872.

The previous prime is 28563011. The next prime is 28563049. The reversal of 28563041 is 14036582.

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 2512225 + 26050816 = 1585^2 + 5104^2 .

It is not a de Polignac number, because 28563041 - 2⁶ = 28562977 is a prime.

It is a super-2 number, since 2×28563041² = 1631694622335362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28562995 and 28563013.

It is not an unprimeable number, because it can be changed into a prime (28563049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1098566 + ... + 1098591.

It is an arithmetic number, because the mean of its divisors is an integer number (7690053).

Almost surely, 2^28563041 is an apocalyptic number.

It is an amenable number.

28563041 is a deficient number, since it is larger than the sum of its proper divisors (2197171).

28563041 is a wasteful number, since it uses less digits than its factorization.

28563041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197170.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 28563041 is about 5344.4401951935. The cubic root of 28563041 is about 305.6807904836.

The spelling of 28563041 in words is "twenty-eight million, five hundred sixty-three thousand, forty-one".