28219563 has 16 divisors (see below), whose sum is σ = 41895840. Its totient is φ = 18772992.

The previous prime is 28219561. The next prime is 28219577. The reversal of 28219563 is 36591282.

28219563 is a `hidden beast` number, since 2 + 82 + 19 + 563 = 666.

It is not a de Polignac number, because 28219563 - 2¹ = 28219561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28219561) 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, 17395 + ... + 18947.

It is an arithmetic number, because the mean of its divisors is an integer number (2618490).

Almost surely, 2^28219563 is an apocalyptic number.

28219563 is a deficient number, since it is larger than the sum of its proper divisors (13676277).

28219563 is a wasteful number, since it uses less digits than its factorization.

28219563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2235 (or 2229 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 28219563 is about 5312.2088626107. The cubic root of 28219563 is about 304.4505488867.

It can be divided in two parts, 28219 and 563, that added together give a palindrome (28782).

The spelling of 28219563 in words is "twenty-eight million, two hundred nineteen thousand, five hundred sixty-three".