1230534020 has 24 divisors (see below), whose sum is σ = 2616835200. Its totient is φ = 485982432.

The previous prime is 1230533999. The next prime is 1230534023. The reversal of 1230534020 is 204350321.

It is a happy number.

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 = 1230533983 and 1230534001.

It is not an unprimeable number, because it can be changed into a prime (1230534023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387830 + ... + 390989.

It is an arithmetic number, because the mean of its divisors is an integer number (109034800).

Almost surely, 2^1230534020 is an apocalyptic number.

1230534020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230534020 is an abundant number, since it is smaller than the sum of its proper divisors (1386301180).

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

1230534020 is a wasteful number, since it uses less digits than its factorization.

1230534020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778907 (or 778905 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 1230534020 is about 35078.9683428689. The cubic root of 1230534020 is about 1071.5963071655.

Adding to 1230534020 its reverse (204350321), we get a palindrome (1434884341).

The spelling of 1230534020 in words is "one billion, two hundred thirty million, five hundred thirty-four thousand, twenty".