1205500030 has 32 divisors (see below), whose sum is σ = 2610408960. Its totient is φ = 391560480.

The previous prime is 1205500019. The next prime is 1205500033. The reversal of 1205500030 is 300055021.

It is a junction number, because it is equal to n+sod(n) for n = 1205499977 and 1205500013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205500033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 451866 + ... + 454525.

It is an arithmetic number, because the mean of its divisors is an integer number (81575280).

Almost surely, 2^1205500030 is an apocalyptic number.

1205500030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1205500030 is an abundant number, since it is smaller than the sum of its proper divisors (1404908930).

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

1205500030 is a wasteful number, since it uses less digits than its factorization.

1205500030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906424.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 1205500030 is about 34720.3114905382. The cubic root of 1205500030 is about 1064.2796100984.

Adding to 1205500030 its reverse (300055021), we get a palindrome (1505555051).

The spelling of 1205500030 in words is "one billion, two hundred five million, five hundred thousand, thirty".