20134302320 has 80 divisors (see below), whose sum is σ = 51160841568. Its totient is φ = 7308241920.

The previous prime is 20134302311. The next prime is 20134302361. The reversal of 20134302320 is 2320343102.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a junction number, because it is equal to n+sod(n) for n = 20134302292 and 20134302301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 469622 + ... + 510698.

Almost surely, 2^20134302320 is an apocalyptic number.

20134302320 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 20134302320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25580420784).

20134302320 is an abundant number, since it is smaller than the sum of its proper divisors (31026539248).

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

20134302320 is a wasteful number, since it uses less digits than its factorization.

20134302320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41658 (or 41652 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20134302320 its reverse (2320343102), we get a palindrome (22454645422).

The spelling of 20134302320 in words is "twenty billion, one hundred thirty-four million, three hundred two thousand, three hundred twenty".