15530203230 has 64 divisors (see below), whose sum is σ = 37891990080. Its totient is φ = 4072882176.

The previous prime is 15530203217. The next prime is 15530203237. The reversal of 15530203230 is 3230203551.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 15530203230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15530203237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 763026 + ... + 783114.

It is an arithmetic number, because the mean of its divisors is an integer number (592062345).

Almost surely, 2^15530203230 is an apocalyptic number.

15530203230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 15530203230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18945995040).

15530203230 is an abundant number, since it is smaller than the sum of its proper divisors (22361786850).

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

15530203230 is a wasteful number, since it uses less digits than its factorization.

15530203230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20525.

The product of its (nonzero) digits is 2700, while the sum is 24.

Adding to 15530203230 its reverse (3230203551), we get a palindrome (18760406781).

The spelling of 15530203230 in words is "fifteen billion, five hundred thirty million, two hundred three thousand, two hundred thirty".