20198304 has 144 divisors (see below), whose sum is σ = 67459392. Its totient is φ = 5612544.

The previous prime is 20198287. The next prime is 20198327. The reversal of 20198304 is 40389102.

It is a tau number, because it is divible by the number of its divisors (144).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86572 + ... + 86804.

It is an arithmetic number, because the mean of its divisors is an integer number (468468).

Almost surely, 2^20198304 is an apocalyptic number.

20198304 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 20198304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33729696).

20198304 is an abundant number, since it is smaller than the sum of its proper divisors (47261088).

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

20198304 is a wasteful number, since it uses less digits than its factorization.

20198304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 20198304 is about 4494.2523293647. The cubic root of 20198304 is about 272.3359459189.

It can be divided in two parts, 20198 and 304, that added together give a palindrome (20502).

The spelling of 20198304 in words is "twenty million, one hundred ninety-eight thousand, three hundred four".