1305780396 has 48 divisors (see below), whose sum is σ = 3259791360. Its totient is φ = 405587520.

The previous prime is 1305780391. The next prime is 1305780397. The reversal of 1305780396 is 6930875031.

It is not an unprimeable number, because it can be changed into a prime (1305780391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33036 + ... + 60851.

It is an arithmetic number, because the mean of its divisors is an integer number (67912320).

Almost surely, 2^1305780396 is an apocalyptic number.

It is an amenable number.

1305780396 is an abundant number, since it is smaller than the sum of its proper divisors (1954010964).

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

1305780396 is a wasteful number, since it uses less digits than its factorization.

1305780396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93974 (or 93972 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 1305780396 is about 36135.5835154215. The cubic root of 1305780396 is about 1093.0081024593.

The spelling of 1305780396 in words is "one billion, three hundred five million, seven hundred eighty thousand, three hundred ninety-six".