20305024530 has 64 divisors (see below), whose sum is σ = 55723707648. Its totient is φ = 4638654720.

The previous prime is 20305024529. The next prime is 20305024549. The reversal of 20305024530 is 3542050302.

It is a self number, because there is not a number n which added to its sum of digits gives 20305024530.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 380920 + ... + 430940.

It is an arithmetic number, because the mean of its divisors is an integer number (870682932).

Almost surely, 2^20305024530 is an apocalyptic number.

20305024530 is an abundant number, since it is smaller than the sum of its proper divisors (35418683118).

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

20305024530 is a wasteful number, since it uses less digits than its factorization.

20305024530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51971.

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

Adding to 20305024530 its reverse (3542050302), we get a palindrome (23847074832).

The spelling of 20305024530 in words is "twenty billion, three hundred five million, twenty-four thousand, five hundred thirty".