2775830 has 16 divisors (see below), whose sum is σ = 5034960. Its totient is φ = 1101792.

The previous prime is 2775781. The next prime is 2775841. The reversal of 2775830 is 385772.

2775830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392 + ... + 2388.

It is an arithmetic number, because the mean of its divisors is an integer number (314685).

2^2775830 is an apocalyptic number.

2775830 is a deficient number, since it is larger than the sum of its proper divisors (2259130).

2775830 is a wasteful number, since it uses less digits than its factorization.

2775830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 2775830 is about 1666.0822308638. The cubic root of 2775830 is about 140.5392468129.

It can be divided in two parts, 27 and 75830, that added together give a palindrome (75857).

The spelling of 2775830 in words is "two million, seven hundred seventy-five thousand, eight hundred thirty".