276820473 has 4 divisors (see below), whose sum is σ = 369093968. Its totient is φ = 184546980.

The previous prime is 276820471. The next prime is 276820477. The reversal of 276820473 is 374028672.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 276820473 - 2¹ = 276820471 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (276820471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46136743 + ... + 46136748.

It is an arithmetic number, because the mean of its divisors is an integer number (92273492).

Almost surely, 2^276820473 is an apocalyptic number.

It is an amenable number.

276820473 is a deficient number, since it is larger than the sum of its proper divisors (92273495).

276820473 is an equidigital number, since it uses as much as digits as its factorization.

276820473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92273494.

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 276820473 is about 16637.9227369284. The cubic root of 276820473 is about 651.7275331922.

The spelling of 276820473 in words is "two hundred seventy-six million, eight hundred twenty thousand, four hundred seventy-three".