20303621800 has 192 divisors, whose sum is σ = 58987117440. Its totient is φ = 6314112000.

The previous prime is 20303621761. The next prime is 20303621801. The reversal of 20303621800 is 812630302.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (20303621801) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8330182 + ... + 8332618.

It is an arithmetic number, because the mean of its divisors is an integer number (307224570).

Almost surely, 2^20303621800 is an apocalyptic number.

20303621800 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 20303621800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29493558720).

20303621800 is an abundant number, since it is smaller than the sum of its proper divisors (38683495640).

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

20303621800 is a wasteful number, since it uses less digits than its factorization.

20303621800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3012 (or 3003 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The spelling of 20303621800 in words is "twenty billion, three hundred three million, six hundred twenty-one thousand, eight hundred".