20598144 has 128 divisors (see below), whose sum is σ = 63974400. Its totient is φ = 5750784.

The previous prime is 20598121. The next prime is 20598157. The reversal of 20598144 is 44189502.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212304 + ... + 212400.

It is an arithmetic number, because the mean of its divisors is an integer number (499800).

Almost surely, 2^20598144 is an apocalyptic number.

20598144 is a gapful number since it is divisible by the number (24) 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 20598144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31987200).

20598144 is an abundant number, since it is smaller than the sum of its proper divisors (43376256).

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

20598144 is an equidigital number, since it uses as much as digits as its factorization.

20598144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 20598144 is about 4538.5178197293. The cubic root of 20598144 is about 274.1212456462.

The spelling of 20598144 in words is "twenty million, five hundred ninety-eight thousand, one hundred forty-four".