20563248 has 20 divisors (see below), whose sum is σ = 53121848. Its totient is φ = 6854400.

The previous prime is 20563237. The next prime is 20563259. The reversal of 20563248 is 84236502.

It is an interprime number because it is at equal distance from previous prime (20563237) and next prime (20563259).

It is a super-3 number, since 3×20563248³ (a number of 23 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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, 214153 + ... + 214248.

Almost surely, 2^20563248 is an apocalyptic number.

It is an amenable number.

20563248 is an abundant number, since it is smaller than the sum of its proper divisors (32558600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20563248 is a wasteful number, since it uses less digits than its factorization.

20563248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428412 (or 428406 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 20563248 is about 4534.6717632040. The cubic root of 20563248 is about 273.9663588442.

The spelling of 20563248 in words is "twenty million, five hundred sixty-three thousand, two hundred forty-eight".