276742381 has 8 divisors (see below), whose sum is σ = 279072000. Its totient is φ = 274419600.

The previous prime is 276742379. The next prime is 276742397. The reversal of 276742381 is 183247672.

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

It is a cyclic number.

It is not a de Polignac number, because 276742381 - 2¹ = 276742379 is a prime.

It is a super-2 number, since 2×276742381² = 153172690883098322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276742321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107295 + ... + 109843.

It is an arithmetic number, because the mean of its divisors is an integer number (34884000).

Almost surely, 2^276742381 is an apocalyptic number.

It is an amenable number.

276742381 is a deficient number, since it is larger than the sum of its proper divisors (2329619).

276742381 is a wasteful number, since it uses less digits than its factorization.

276742381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3419.

The product of its digits is 112896, while the sum is 40.

The square root of 276742381 is about 16635.5757640065. The cubic root of 276742381 is about 651.6662425747. Note that the first 3 decimals are identical.

The spelling of 276742381 in words is "two hundred seventy-six million, seven hundred forty-two thousand, three hundred eighty-one".