276945138 has 12 divisors (see below), whose sum is σ = 600047838. Its totient is φ = 92315040.

The previous prime is 276945133. The next prime is 276945169. The reversal of 276945138 is 831549672.

It can be written as a sum of positive squares in only one way, i.e., 170380809 + 106564329 = 13053^2 + 10323^2 .

It is a junction number, because it is equal to n+sod(n) for n = 276945093 and 276945102.

It is not an unprimeable number, because it can be changed into a prime (276945133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7692903 + ... + 7692938.

Almost surely, 2^276945138 is an apocalyptic number.

276945138 is an abundant number, since it is smaller than the sum of its proper divisors (323102700).

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

276945138 is a wasteful number, since it uses less digits than its factorization.

276945138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15385849 (or 15385846 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 276945138 is about 16641.6687264228. The cubic root of 276945138 is about 651.8253528110.

The spelling of 276945138 in words is "two hundred seventy-six million, nine hundred forty-five thousand, one hundred thirty-eight".