2775982 has 12 divisors (see below), whose sum is σ = 4577328. Its totient is φ = 1261700.

The previous prime is 2775959. The next prime is 2775989. The reversal of 2775982 is 2895772.

It is a d-powerful number, because it can be written as 2¹⁹ + 7² + 7⁵ + 5⁷ + 9⁵ + 8³ + 2²¹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2775989) 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 5 ways as a sum of consecutive naturals, for example, 5494 + ... + 5977.

It is an arithmetic number, because the mean of its divisors is an integer number (381444).

2^2775982 is an apocalyptic number.

2775982 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2775982 is a deficient number, since it is larger than the sum of its proper divisors (1801346).

2775982 is a wasteful number, since it uses less digits than its factorization.

2775982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11495 (or 11484 counting only the distinct ones).

The product of its digits is 70560, while the sum is 40.

The square root of 2775982 is about 1666.1278462351. The cubic root of 2775982 is about 140.5418120007.

The spelling of 2775982 in words is "two million, seven hundred seventy-five thousand, nine hundred eighty-two".