20343204 has 96 divisors (see below), whose sum is σ = 61286400. Its totient is φ = 5715360.

The previous prime is 20343199. The next prime is 20343209. The reversal of 20343204 is 40234302.

It is an interprime number because it is at equal distance from previous prime (20343199) and next prime (20343209).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20343209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53487 + ... + 53865.

It is an arithmetic number, because the mean of its divisors is an integer number (638400).

Almost surely, 2^20343204 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 20343204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30643200).

20343204 is an abundant number, since it is smaller than the sum of its proper divisors (40943196).

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

20343204 is a wasteful number, since it uses less digits than its factorization.

20343204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470 (or 462 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 20343204 is about 4510.3441110408. The cubic root of 20343204 is about 272.9856289984.

Adding to 20343204 its reverse (40234302), we get a palindrome (60577506).

The spelling of 20343204 in words is "twenty million, three hundred forty-three thousand, two hundred four".