276136749 has 32 divisors (see below), whose sum is σ = 468906240. Its totient is φ = 157329216.

The previous prime is 276136739. The next prime is 276136769. The reversal of 276136749 is 947631672.

276136749 is a `hidden beast` number, since 27 + 613 + 6 + 7 + 4 + 9 = 666.

It is not a de Polignac number, because 276136749 - 2¹³ = 276128557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276136739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68539 + ... + 72455.

It is an arithmetic number, because the mean of its divisors is an integer number (14653320).

Almost surely, 2^276136749 is an apocalyptic number.

It is an amenable number.

276136749 is a deficient number, since it is larger than the sum of its proper divisors (192769491).

276136749 is a wasteful number, since it uses less digits than its factorization.

276136749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4306 (or 4300 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 276136749 is about 16617.3628774243. The cubic root of 276136749 is about 651.1905195313.

The spelling of 276136749 in words is "two hundred seventy-six million, one hundred thirty-six thousand, seven hundred forty-nine".