1278735360 has 264 divisors, whose sum is σ = 4760503200. Its totient is φ = 292110336.

The previous prime is 1278735343. The next prime is 1278735361. The reversal of 1278735360 is 635378721.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1278735361) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 751791 + ... + 753489.

Almost surely, 2^1278735360 is an apocalyptic number.

1278735360 is a gapful number since it is divisible by the number (10) 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 1278735360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2380251600).

1278735360 is an abundant number, since it is smaller than the sum of its proper divisors (3481767840).

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

1278735360 is a wasteful number, since it uses less digits than its factorization.

1278735360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1741 (or 1716 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 1278735360 is about 35759.4093910959. The cubic root of 1278735360 is about 1085.4093495298.

The spelling of 1278735360 in words is "one billion, two hundred seventy-eight million, seven hundred thirty-five thousand, three hundred sixty".