7279128275 has 6 divisors (see below), whose sum is σ = 9026119092. Its totient is φ = 5823302600.

The previous prime is 7279128271. The next prime is 7279128281. The reversal of 7279128275 is 5728219727.

It is not a de Polignac number, because 7279128275 - 2² = 7279128271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7279128271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 145582541 + ... + 145582590.

It is an arithmetic number, because the mean of its divisors is an integer number (1504353182).

Almost surely, 2^7279128275 is an apocalyptic number.

7279128275 is a deficient number, since it is larger than the sum of its proper divisors (1746990817).

7279128275 is a wasteful number, since it uses less digits than its factorization.

7279128275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291165141 (or 291165136 counting only the distinct ones).

The product of its digits is 987840, while the sum is 50.

The square root of 7279128275 is about 85317.8074905819. The cubic root of 7279128275 is about 1938.0268558196.

The spelling of 7279128275 in words is "seven billion, two hundred seventy-nine million, one hundred twenty-eight thousand, two hundred seventy-five".