276420261 has 16 divisors (see below), whose sum is σ = 400430016. Its totient is φ = 168596736.

The previous prime is 276420259. The next prime is 276420293. The reversal of 276420261 is 162024672.

It is not a de Polignac number, because 276420261 - 2¹ = 276420259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276420241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26955 + ... + 35768.

It is an arithmetic number, because the mean of its divisors is an integer number (25026876).

Almost surely, 2^276420261 is an apocalyptic number.

It is an amenable number.

276420261 is a deficient number, since it is larger than the sum of its proper divisors (124009755).

276420261 is a wasteful number, since it uses less digits than its factorization.

276420261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62852.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 276420261 is about 16625.8912843793. The cubic root of 276420261 is about 651.4133042923.

The spelling of 276420261 in words is "two hundred seventy-six million, four hundred twenty thousand, two hundred sixty-one".