20320300 has 216 divisors, whose sum is σ = 62339760. Its totient is φ = 5644800.

The previous prime is 20320277. The next prime is 20320303. The reversal of 20320300 is 302302.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (20320303) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 700686 + ... + 700714.

It is an arithmetic number, because the mean of its divisors is an integer number (288610).

Almost surely, 2^20320300 is an apocalyptic number.

20320300 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 20320300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31169880).

20320300 is an abundant number, since it is smaller than the sum of its proper divisors (42019460).

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

20320300 is a wasteful number, since it uses less digits than its factorization.

20320300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 10.

The square root of 20320300 is about 4507.8043435801. The cubic root of 20320300 is about 272.8831408681.

Adding to 20320300 its reverse (302302), we get a palindrome (20622602).

It can be divided in two parts, 203 and 20300, that multiplied together give a square (4120900 = 2030²).

The spelling of 20320300 in words is "twenty million, three hundred twenty thousand, three hundred".