1278303768 has 240 divisors, whose sum is σ = 4211032320. Its totient is φ = 361210752.

The previous prime is 1278303757. The next prime is 1278303779. The reversal of 1278303768 is 8673038721.

1278303768 is a `hidden beast` number, since 1 + 278 + 3 + 0 + 376 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (1278303757) and next prime (1278303779).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 4032346 + ... + 4032662.

It is an arithmetic number, because the mean of its divisors is an integer number (17545968).

Almost surely, 2^1278303768 is an apocalyptic number.

1278303768 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1278303768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2105516160).

1278303768 is an abundant number, since it is smaller than the sum of its proper divisors (2932728552).

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

1278303768 is a wasteful number, since it uses less digits than its factorization.

1278303768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476 (or 456 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 1278303768 is about 35753.3742183867. The cubic root of 1278303768 is about 1085.2872219132.

The spelling of 1278303768 in words is "one billion, two hundred seventy-eight million, three hundred three thousand, seven hundred sixty-eight".