276036381 has 12 divisors (see below), whose sum is σ = 398980608. Its totient is φ = 183903624.

The previous prime is 276036379. The next prime is 276036421. The reversal of 276036381 is 183630672.

It is a happy number.

276036381 is a `hidden beast` number, since 276 + 0 + 3 + 6 + 381 = 666.

It is not a de Polignac number, because 276036381 - 2¹ = 276036379 is a prime.

It is a super-2 number, since 2×276036381² = 152392167271154322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276036331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5746 + ... + 24188.

It is an arithmetic number, because the mean of its divisors is an integer number (33248384).

Almost surely, 2^276036381 is an apocalyptic number.

It is an amenable number.

276036381 is a deficient number, since it is larger than the sum of its proper divisors (122944227).

276036381 is a wasteful number, since it uses less digits than its factorization.

276036381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20112 (or 20109 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 276036381 is about 16614.3426291864. The cubic root of 276036381 is about 651.1116134451. Note that the first 3 decimals are identical.

The spelling of 276036381 in words is "two hundred seventy-six million, thirty-six thousand, three hundred eighty-one".