276406 has 8 divisors (see below), whose sum is σ = 446544. Its totient is φ = 127560.

The previous prime is 276401. The next prime is 276439. The reversal of 276406 is 604672.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276401) by changing a digit.

276406 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5290 + ... + 5341.

It is an arithmetic number, because the mean of its divisors is an integer number (55818).

2²⁷⁶⁴⁰⁶ is an apocalyptic number.

276406 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

276406 is a deficient number, since it is larger than the sum of its proper divisors (170138).

276406 is a wasteful number, since it uses less digits than its factorization.

276406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10646.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 276406 is about 525.7432833618. The cubic root of 276406 is about 65.1402101586.

The spelling of 276406 in words is "two hundred seventy-six thousand, four hundred six".