20324100 has 72 divisors (see below), whose sum is σ = 60426688. Its totient is φ = 5270400.

The previous prime is 20324089. The next prime is 20324113. The reversal of 20324100 is 142302.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10185 + ... + 12015.

Almost surely, 2^20324100 is an apocalyptic number.

20324100 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 20324100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30213344).

20324100 is an abundant number, since it is smaller than the sum of its proper divisors (40102588).

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

20324100 is a wasteful number, since it uses less digits than its factorization.

20324100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885 (or 1878 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20324100 is about 4508.2258151073. The cubic root of 20324100 is about 272.9001499888.

Adding to 20324100 its reverse (142302), we get a palindrome (20466402).

The spelling of 20324100 in words is "twenty million, three hundred twenty-four thousand, one hundred".