20350280000 has 140 divisors (see below), whose sum is σ = 51323321280. Its totient is φ = 8001216000.

The previous prime is 20350279993. The next prime is 20350280023. The reversal of 20350280000 is 8205302.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2355689 + ... + 2364311.

It is an arithmetic number, because the mean of its divisors is an integer number (366595152).

Almost surely, 2^20350280000 is an apocalyptic number.

20350280000 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 20350280000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25661660640).

20350280000 is an abundant number, since it is smaller than the sum of its proper divisors (30973041280).

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

20350280000 is an frugal number, since it uses more digits than its factorization.

20350280000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8714 (or 8689 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 20350280000 its reverse (8205302), we get a palindrome (20358485302).

The spelling of 20350280000 in words is "twenty billion, three hundred fifty million, two hundred eighty thousand".