276488945 has 8 divisors (see below), whose sum is σ = 331887336. Its totient is φ = 221124096.

The previous prime is 276488939. The next prime is 276488983. The reversal of 276488945 is 549884672.

It can be written as a sum of positive squares in 4 ways, for example, as 1227664 + 275261281 = 1108^2 + 16591^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 276488945 - 2¹² = 276484849 is a prime.

It is a super-2 number, since 2×276488945² = 152892273414426050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16439 + ... + 28691.

It is an arithmetic number, because the mean of its divisors is an integer number (41485917).

Almost surely, 2^276488945 is an apocalyptic number.

It is an amenable number.

276488945 is a deficient number, since it is larger than the sum of its proper divisors (55398391).

276488945 is a wasteful number, since it uses less digits than its factorization.

276488945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16771.

The product of its digits is 3870720, while the sum is 53.

The square root of 276488945 is about 16627.9567295564. The cubic root of 276488945 is about 651.4672535047.

The spelling of 276488945 in words is "two hundred seventy-six million, four hundred eighty-eight thousand, nine hundred forty-five".