276438 has 8 divisors (see below), whose sum is σ = 552888. Its totient is φ = 92144.

The previous prime is 276401. The next prime is 276439. The reversal of 276438 is 834672.

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

276438 is an admirable number.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 276438.

It is not an unprimeable number, because it can be changed into a prime (276439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23031 + ... + 23042.

It is an arithmetic number, because the mean of its divisors is an integer number (69111).

2²⁷⁶⁴³⁸ is an apocalyptic number.

276438 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

276438 is a wasteful number, since it uses less digits than its factorization.

276438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46078.

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

The square root of 276438 is about 525.7737155849. The cubic root of 276438 is about 65.1427238598.

The spelling of 276438 in words is "two hundred seventy-six thousand, four hundred thirty-eight".