1278317604 has 24 divisors (see below), whose sum is σ = 3013493728. Its totient is φ = 421712640.

The previous prime is 1278317603. The next prime is 1278317627. The reversal of 1278317604 is 4067138721.

It is not an unprimeable number, because it can be changed into a prime (1278317603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 547942 + ... + 550269.

Almost surely, 2^1278317604 is an apocalyptic number.

It is an amenable number.

1278317604 is an abundant number, since it is smaller than the sum of its proper divisors (1735176124).

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

1278317604 is a wasteful number, since it uses less digits than its factorization.

1278317604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098315 (or 1098313 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 1278317604 is about 35753.5677100901. The cubic root of 1278317604 is about 1085.2911375135.

The spelling of 1278317604 in words is "one billion, two hundred seventy-eight million, three hundred seventeen thousand, six hundred four".