276732081 has 6 divisors (see below), whose sum is σ = 399724130. Its totient is φ = 184488048.

The previous prime is 276732059. The next prime is 276732089. The reversal of 276732081 is 180237672.

It can be written as a sum of positive squares in only one way, i.e., 275029056 + 1703025 = 16584^2 + 1305^2 .

It is not a de Polignac number, because 276732081 - 2¹⁰ = 276731057 is a prime.

It is a super-2 number, since 2×276732081² = 153161289309181122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (276732089) 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, 15373996 + ... + 15374013.

Almost surely, 2^276732081 is an apocalyptic number.

It is an amenable number.

276732081 is a deficient number, since it is larger than the sum of its proper divisors (122992049).

276732081 is a wasteful number, since it uses less digits than its factorization.

276732081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30748015 (or 30748012 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 276732081 is about 16635.2661836233. The cubic root of 276732081 is about 651.6581577444.

The spelling of 276732081 in words is "two hundred seventy-six million, seven hundred thirty-two thousand, eighty-one".