2790855 has 24 divisors (see below), whose sum is σ = 5018832. Its totient is φ = 1487808.

The previous prime is 2790841. The next prime is 2790857. The reversal of 2790855 is 5580972.

It is not a de Polignac number, because 2790855 - 2¹⁵ = 2758087 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2790857) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67 + ... + 2363.

It is an arithmetic number, because the mean of its divisors is an integer number (209118).

2^2790855 is an apocalyptic number.

2790855 is a deficient number, since it is larger than the sum of its proper divisors (2227977).

2790855 is an equidigital number, since it uses as much as digits as its factorization.

2790855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2317 (or 2305 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 2790855 is about 1670.5852267993. The cubic root of 2790855 is about 140.7923607415.

The spelling of 2790855 in words is "two million, seven hundred ninety thousand, eight hundred fifty-five".