2775872 has 28 divisors (see below), whose sum is σ = 6010656. Its totient is φ = 1261440.

The previous prime is 2775863. The next prime is 2775889. The reversal of 2775872 is 2785772.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1268 + ... + 2675.

2^2775872 is an apocalyptic number.

2775872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2775872 is an abundant number, since it is smaller than the sum of its proper divisors (3234784).

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

2775872 is a wasteful number, since it uses less digits than its factorization.

2775872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3966 (or 3956 counting only the distinct ones).

The product of its digits is 54880, while the sum is 38.

The square root of 2775872 is about 1666.0948352360. The cubic root of 2775872 is about 140.5399556242.

The spelling of 2775872 in words is "two million, seven hundred seventy-five thousand, eight hundred seventy-two".