1305901328 has 20 divisors (see below), whose sum is σ = 2536569420. Its totient is φ = 651302784.

The previous prime is 1305901327. The next prime is 1305901343. The reversal of 1305901328 is 8231095031.

It can be written as a sum of positive squares in 2 ways, for example, as 812706064 + 493195264 = 28508^2 + 22208^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1305901294 and 1305901303.

It is not an unprimeable number, because it can be changed into a prime (1305901327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96443 + ... + 109146.

It is an arithmetic number, because the mean of its divisors is an integer number (126828471).

Almost surely, 2^1305901328 is an apocalyptic number.

It is an amenable number.

1305901328 is a deficient number, since it is larger than the sum of its proper divisors (1230668092).

1305901328 is a wasteful number, since it uses less digits than its factorization.

1305901328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205994 (or 205988 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1305901328 is about 36137.2567857606. The cubic root of 1305901328 is about 1093.0418436039.

Adding to 1305901328 its reverse (8231095031), we get a palindrome (9536996359).

The spelling of 1305901328 in words is "one billion, three hundred five million, nine hundred one thousand, three hundred twenty-eight".