2775320 has 16 divisors (see below), whose sum is σ = 6244560. Its totient is φ = 1110112.

The previous prime is 2775313. The next prime is 2775323. The reversal of 2775320 is 235772.

It is a super-2 number, since 2×2775320² = 15404802204800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2775320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2775323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34652 + ... + 34731.

It is an arithmetic number, because the mean of its divisors is an integer number (390285).

2^2775320 is an apocalyptic number.

2775320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2775320 is an abundant number, since it is smaller than the sum of its proper divisors (3469240).

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

2775320 is a wasteful number, since it uses less digits than its factorization.

2775320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69394 (or 69390 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 26.

The square root of 2775320 is about 1665.9291701630. The cubic root of 2775320 is about 140.5306392486.

The spelling of 2775320 in words is "two million, seven hundred seventy-five thousand, three hundred twenty".