20340025530 has 128 divisors (see below), whose sum is σ = 56461038336. Its totient is φ = 4634726400.

The previous prime is 20340025529. The next prime is 20340025603. The reversal of 20340025530 is 3552004302.

It is a super-2 number, since 2×20340025530² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20340025530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5277084 + ... + 5280936.

It is an arithmetic number, because the mean of its divisors is an integer number (441101862).

Almost surely, 2^20340025530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20340025530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28230519168).

20340025530 is an abundant number, since it is smaller than the sum of its proper divisors (36121012806).

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

20340025530 is a wasteful number, since it uses less digits than its factorization.

20340025530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4832.

The product of its (nonzero) digits is 3600, while the sum is 24.

Adding to 20340025530 its reverse (3552004302), we get a palindrome (23892029832).

The spelling of 20340025530 in words is "twenty billion, three hundred forty million, twenty-five thousand, five hundred thirty".