1027878660 has 60 divisors (see below), whose sum is σ = 3224498508. Its totient is φ = 274100544.

The previous prime is 1027878659. The next prime is 1027878679. The reversal of 1027878660 is 668787201.

It can be written as a sum of positive squares in 2 ways, for example, as 251476164 + 776402496 = 15858^2 + 27864^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

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 19 ways as a sum of consecutive naturals, for example, 315627 + ... + 318866.

Almost surely, 2^1027878660 is an apocalyptic number.

1027878660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1027878660 is an abundant number, since it is smaller than the sum of its proper divisors (2196619848).

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

1027878660 is a wasteful number, since it uses less digits than its factorization.

1027878660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634514 (or 634503 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 1027878660 is about 32060.5467826112. The cubic root of 1027878660 is about 1009.2078420838.

The spelling of 1027878660 in words is "one billion, twenty-seven million, eight hundred seventy-eight thousand, six hundred sixty".