20484288 has 168 divisors, whose sum is σ = 66330576. Its totient is φ = 5990400.

The previous prime is 20484287. The next prime is 20484293. The reversal of 20484288 is 88248402.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20484287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 335778 + ... + 335838.

Almost surely, 2^20484288 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 20484288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33165288).

20484288 is an abundant number, since it is smaller than the sum of its proper divisors (45846288).

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

20484288 is a wasteful number, since it uses less digits than its factorization.

20484288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 36.

The square root of 20484288 is about 4525.9571363414. The cubic root of 20484288 is about 273.6152448672.

It can be divided in two parts, 2048 and 4288, that added together give a palindrome (6336).

The spelling of 20484288 in words is "twenty million, four hundred eighty-four thousand, two hundred eighty-eight".