20200494720 has 512 divisors, whose sum is σ = 76086190080. Its totient is φ = 4463198208.

The previous prime is 20200494719. The next prime is 20200494751. The reversal of 20200494720 is 2749400202.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 71379699 + ... + 71379981.

It is an arithmetic number, because the mean of its divisors is an integer number (148605840).

Almost surely, 2^20200494720 is an apocalyptic number.

20200494720 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 20200494720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38043095040).

20200494720 is an abundant number, since it is smaller than the sum of its proper divisors (55885695360).

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

20200494720 is a wasteful number, since it uses less digits than its factorization.

20200494720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

Adding to 20200494720 its reverse (2749400202), we get a palindrome (22949894922).

The spelling of 20200494720 in words is "twenty billion, two hundred million, four hundred ninety-four thousand, seven hundred twenty".