1305500630 has 48 divisors (see below), whose sum is σ = 2758749840. Its totient is φ = 443475648.

The previous prime is 1305500587. The next prime is 1305500641. The reversal of 1305500630 is 360055031.

It is a junction number, because it is equal to n+sod(n) for n = 1305500596 and 1305500605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41189 + ... + 65631.

It is an arithmetic number, because the mean of its divisors is an integer number (57473955).

Almost surely, 2^1305500630 is an apocalyptic number.

1305500630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1305500630 is an abundant number, since it is smaller than the sum of its proper divisors (1453249210).

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

1305500630 is a wasteful number, since it uses less digits than its factorization.

1305500630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24573 (or 24566 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 1305500630 is about 36131.7122483837. The cubic root of 1305500630 is about 1092.9300371770.

Adding to 1305500630 its reverse (360055031), we get a palindrome (1665555661).

The spelling of 1305500630 in words is "one billion, three hundred five million, five hundred thousand, six hundred thirty".