20344200 has 96 divisors (see below), whose sum is σ = 64683360. Its totient is φ = 5286400.

The previous prime is 20344199. The next prime is 20344211. The reversal of 20344200 is 244302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20344200.

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, 24187 + ... + 25013.

It is an arithmetic number, because the mean of its divisors is an integer number (673785).

Almost surely, 2^20344200 is an apocalyptic number.

20344200 is a gapful number since it is divisible by the number (20) 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 20344200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32341680).

20344200 is an abundant number, since it is smaller than the sum of its proper divisors (44339160).

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

20344200 is a wasteful number, since it uses less digits than its factorization.

20344200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887 (or 878 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 20344200 is about 4510.4545225509. The cubic root of 20344200 is about 272.9900840365.

Adding to 20344200 its reverse (244302), we get a palindrome (20588502).

The spelling of 20344200 in words is "twenty million, three hundred forty-four thousand, two hundred".