276731145 has 24 divisors (see below), whose sum is σ = 480292800. Its totient is φ = 147397536.

The previous prime is 276731123. The next prime is 276731149. The reversal of 276731145 is 541137672.

It is a happy number.

It is not a de Polignac number, because 276731145 - 2⁸ = 276730889 is a prime.

It is a super-2 number, since 2×276731145² = 153160253226022050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (276731149) 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 23 ways as a sum of consecutive naturals, for example, 35076 + ... + 42234.

It is an arithmetic number, because the mean of its divisors is an integer number (20012200).

Almost surely, 2^276731145 is an apocalyptic number.

It is an amenable number.

276731145 is a deficient number, since it is larger than the sum of its proper divisors (203561655).

276731145 is a wasteful number, since it uses less digits than its factorization.

276731145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8029 (or 8026 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 276731145 is about 16635.2380505961. The cubic root of 276731145 is about 651.6574230353.

The spelling of 276731145 in words is "two hundred seventy-six million, seven hundred thirty-one thousand, one hundred forty-five".