1305412206 has 64 divisors (see below), whose sum is σ = 3093742080. Its totient is φ = 359291520.

The previous prime is 1305412193. The next prime is 1305412211. The reversal of 1305412206 is 6022145031.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 694540 + ... + 696416.

It is an arithmetic number, because the mean of its divisors is an integer number (48339720).

Almost surely, 2^1305412206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1305412206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1546871040).

1305412206 is an abundant number, since it is smaller than the sum of its proper divisors (1788329874).

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

1305412206 is a wasteful number, since it uses less digits than its factorization.

1305412206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2489.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1305412206 is about 36130.4885934303. The cubic root of 1305412206 is about 1092.9053612212.

Adding to 1305412206 its reverse (6022145031), we get a palindrome (7327557237).

The spelling of 1305412206 in words is "one billion, three hundred five million, four hundred twelve thousand, two hundred six".