1278875080 has 32 divisors (see below), whose sum is σ = 3288536640. Its totient is φ = 438471360.

The previous prime is 1278875077. The next prime is 1278875111. The reversal of 1278875080 is 805788721.

It is a happy number.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1278875080.

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 7 ways as a sum of consecutive naturals, for example, 2283426 + ... + 2283985.

It is an arithmetic number, because the mean of its divisors is an integer number (102766770).

Almost surely, 2^1278875080 is an apocalyptic number.

1278875080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1278875080 is an abundant number, since it is smaller than the sum of its proper divisors (2009661560).

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

1278875080 is a wasteful number, since it uses less digits than its factorization.

1278875080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4567429 (or 4567425 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 46.

The square root of 1278875080 is about 35761.3629494179. The cubic root of 1278875080 is about 1085.4488802193.

The spelling of 1278875080 in words is "one billion, two hundred seventy-eight million, eight hundred seventy-five thousand, eighty".