1286328055 has 8 divisors (see below), whose sum is σ = 1581242544. Its totient is φ = 1003963200.

The previous prime is 1286328047. The next prime is 1286328083. The reversal of 1286328055 is 5508236821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1286328055 - 2³ = 1286328047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1286327999 and 1286328017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3137181 + ... + 3137590.

It is an arithmetic number, because the mean of its divisors is an integer number (197655318).

Almost surely, 2^1286328055 is an apocalyptic number.

1286328055 is a deficient number, since it is larger than the sum of its proper divisors (294914489).

1286328055 is an equidigital number, since it uses as much as digits as its factorization.

1286328055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6274817.

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 1286328055 is about 35865.4158626385. The cubic root of 1286328055 is about 1087.5533752813.

The spelling of 1286328055 in words is "one billion, two hundred eighty-six million, three hundred twenty-eight thousand, fifty-five".