275302778028 has 12 divisors (see below), whose sum is σ = 642373148760. Its totient is φ = 91767592672.

The previous prime is 275302778027. The next prime is 275302778039. The reversal of 275302778028 is 820877203572.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (275302778021) 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 3 ways as a sum of consecutive naturals, for example, 11470949073 + ... + 11470949096.

It is an arithmetic number, because the mean of its divisors is an integer number (53531095730).

Almost surely, 2^275302778028 is an apocalyptic number.

It is an amenable number.

275302778028 is an abundant number, since it is smaller than the sum of its proper divisors (367070370732).

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

275302778028 is a wasteful number, since it uses less digits than its factorization.

275302778028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22941898176 (or 22941898174 counting only the distinct ones).

The product of its (nonzero) digits is 2634240, while the sum is 51.

The spelling of 275302778028 in words is "two hundred seventy-five billion, three hundred two million, seven hundred seventy-eight thousand, twenty-eight".