20533088 has 48 divisors (see below), whose sum is σ = 41966064. Its totient is φ = 9884160.

The previous prime is 20533063. The next prime is 20533109. The reversal of 20533088 is 88033502.

It is a self number, because there is not a number n which added to its sum of digits gives 20533088.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130706 + ... + 130862.

It is an arithmetic number, because the mean of its divisors is an integer number (874293).

Almost surely, 2^20533088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20533088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20983032).

20533088 is an abundant number, since it is smaller than the sum of its proper divisors (21432976).

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

20533088 is a wasteful number, since it uses less digits than its factorization.

20533088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295 (or 287 counting only the distinct ones).

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

The square root of 20533088 is about 4531.3450541754. The cubic root of 20533088 is about 273.8323516686.

The spelling of 20533088 in words is "twenty million, five hundred thirty-three thousand, eighty-eight".