275228078 has 4 divisors (see below), whose sum is σ = 412842120. Its totient is φ = 137614038.

The previous prime is 275228071. The next prime is 275228101. The reversal of 275228078 is 870822572.

It is a happy number.

275228078 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275228071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68807018 + ... + 68807021.

It is an arithmetic number, because the mean of its divisors is an integer number (103210530).

Almost surely, 2^275228078 is an apocalyptic number.

275228078 is a deficient number, since it is larger than the sum of its proper divisors (137614042).

275228078 is a wasteful number, since it uses less digits than its factorization.

275228078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137614041.

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 275228078 is about 16589.9993369500. Note that the first 3 decimals coincide. The cubic root of 275228078 is about 650.4754533204.

The spelling of 275228078 in words is "two hundred seventy-five million, two hundred twenty-eight thousand, seventy-eight".