20302317700 has 144 divisors (see below), whose sum is σ = 50970487680. Its totient is φ = 6875550720.

The previous prime is 20302317697. The next prime is 20302317701. The reversal of 20302317700 is 771320302.

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 (20302317701) 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, 25796707 + ... + 25797493.

It is an arithmetic number, because the mean of its divisors is an integer number (353961720).

Almost surely, 2^20302317700 is an apocalyptic number.

20302317700 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 20302317700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25485243840).

20302317700 is an abundant number, since it is smaller than the sum of its proper divisors (30668169980).

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

20302317700 is a wasteful number, since it uses less digits than its factorization.

20302317700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214 (or 1207 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 25.

The spelling of 20302317700 in words is "twenty billion, three hundred two million, three hundred seventeen thousand, seven hundred".