20563088 has 80 divisors (see below), whose sum is σ = 50830080. Its totient is φ = 7838208.

The previous prime is 20563087. The next prime is 20563097. The reversal of 20563088 is 88036502.

It is not an unprimeable number, because it can be changed into a prime (20563087) 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, 41981 + ... + 42467.

It is an arithmetic number, because the mean of its divisors is an integer number (635376).

Almost surely, 2^20563088 is an apocalyptic number.

20563088 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20563088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25415040).

20563088 is an abundant number, since it is smaller than the sum of its proper divisors (30266992).

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

20563088 is a wasteful number, since it uses less digits than its factorization.

20563088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544 (or 538 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 20563088 is about 4534.6541213195. The cubic root of 20563088 is about 273.9656482766.

The spelling of 20563088 in words is "twenty million, five hundred sixty-three thousand, eighty-eight".