276990228 has 18 divisors (see below), whose sum is σ = 700169834. Its totient is φ = 92330064.

The previous prime is 276990209. The next prime is 276990229. The reversal of 276990228 is 822099672.

It can be written as a sum of positive squares in only one way, i.e., 213978384 + 63011844 = 14628^2 + 7938^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276990229) 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, 3847051 + ... + 3847122.

Almost surely, 2^276990228 is an apocalyptic number.

It is an amenable number.

276990228 is an abundant number, since it is smaller than the sum of its proper divisors (423179606).

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

276990228 is a wasteful number, since it uses less digits than its factorization.

276990228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7694183 (or 7694178 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 276990228 is about 16643.0234032161. The cubic root of 276990228 is about 651.8607258942.

The spelling of 276990228 in words is "two hundred seventy-six million, nine hundred ninety thousand, two hundred twenty-eight".