20530230400 has 48 divisors (see below), whose sum is σ = 50716092690. Its totient is φ = 8212090880.

The previous prime is 20530230377. The next prime is 20530230401. The reversal of 20530230400 is 403203502.

It can be written as a sum of positive squares in 3 ways, for example, as 11021640256 + 9508590144 = 104984^2 + 97512^2 .

It is not an unprimeable number, because it can be changed into a prime (20530230401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3204649 + ... + 3211048.

Almost surely, 2^20530230400 is an apocalyptic number.

20530230400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20530230400 is an abundant number, since it is smaller than the sum of its proper divisors (30185862290).

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

20530230400 is an equidigital number, since it uses as much as digits as its factorization.

20530230400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6415721 (or 6415704 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

Adding to 20530230400 its reverse (403203502), we get a palindrome (20933433902).

The spelling of 20530230400 in words is "twenty billion, five hundred thirty million, two hundred thirty thousand, four hundred".