275127978 has 16 divisors (see below), whose sum is σ = 574180416. Its totient is φ = 87721920.

The previous prime is 275127977. The next prime is 275127997. The reversal of 275127978 is 879721572.

It is a happy number.

275127978 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (275127973) 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 7 ways as a sum of consecutive naturals, for example, 996703 + ... + 996978.

It is an arithmetic number, because the mean of its divisors is an integer number (35886276).

Almost surely, 2^275127978 is an apocalyptic number.

275127978 is an abundant number, since it is smaller than the sum of its proper divisors (299052438).

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

275127978 is a wasteful number, since it uses less digits than its factorization.

275127978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993709.

The product of its digits is 493920, while the sum is 48.

The square root of 275127978 is about 16586.9821848340. The cubic root of 275127978 is about 650.3965848068.

The spelling of 275127978 in words is "two hundred seventy-five million, one hundred twenty-seven thousand, nine hundred seventy-eight".