20484888 has 64 divisors (see below), whose sum is σ = 54432000. Its totient is φ = 6406272.

The previous prime is 20484883. The next prime is 20484901. The reversal of 20484888 is 88848402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20484883) 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, 76018 + ... + 76286.

It is an arithmetic number, because the mean of its divisors is an integer number (850500).

Almost surely, 2^20484888 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 20484888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27216000).

20484888 is an abundant number, since it is smaller than the sum of its proper divisors (33947112).

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

20484888 is a wasteful number, since it uses less digits than its factorization.

20484888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 42.

The square root of 20484888 is about 4526.0234201780. The cubic root of 20484888 is about 273.6179163056.

The spelling of 20484888 in words is "twenty million, four hundred eighty-four thousand, eight hundred eighty-eight".