28030563 has 16 divisors (see below), whose sum is σ = 45302400. Its totient is φ = 16988040.

The previous prime is 28030553. The next prime is 28030591. The reversal of 28030563 is 36503082.

It is not a de Polignac number, because 28030563 - 2⁴ = 28030547 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (28030553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46893 + ... + 47486.

It is an arithmetic number, because the mean of its divisors is an integer number (2831400).

Almost surely, 2^28030563 is an apocalyptic number.

28030563 is a deficient number, since it is larger than the sum of its proper divisors (17271837).

28030563 is a wasteful number, since it uses less digits than its factorization.

28030563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94399 (or 94393 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 28030563 is about 5294.3897665359. The cubic root of 28030563 is about 303.7693418563.

The spelling of 28030563 in words is "twenty-eight million, thirty thousand, five hundred sixty-three".