1278063360 has 432 divisors, whose sum is σ = 5249776896. Its totient is φ = 291631104.

The previous prime is 1278063337. The next prime is 1278063419. The reversal of 1278063360 is 633608721.

It is a happy number.

1278063360 is a `hidden beast` number, since 12 + 7 + 8 + 0 + 633 + 6 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2176987 + ... + 2177573.

Almost surely, 2^1278063360 is an apocalyptic number.

1278063360 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 1278063360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2624888448).

1278063360 is an abundant number, since it is smaller than the sum of its proper divisors (3971713536).

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

1278063360 is an frugal number, since it uses more digits than its factorization.

1278063360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630 (or 604 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 1278063360 is about 35750.0120279700. The cubic root of 1278063360 is about 1085.2191817246.

The spelling of 1278063360 in words is "one billion, two hundred seventy-eight million, sixty-three thousand, three hundred sixty".