2808855 has 48 divisors (see below), whose sum is σ = 5738304. Its totient is φ = 1244160.

The previous prime is 2808847. The next prime is 2808863. The reversal of 2808855 is 5588082.

It is an interprime number because it is at equal distance from previous prime (2808847) and next prime (2808863).

It is not a de Polignac number, because 2808855 - 2³ = 2808847 is a prime.

It is a super-2 number, since 2×2808855² = 15779332822050, which contains 22 as substring.

2808855 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11535 + ... + 11775.

It is an arithmetic number, because the mean of its divisors is an integer number (119548).

2^2808855 is an apocalyptic number.

2808855 is an abundant number, since it is smaller than the sum of its proper divisors (2929449).

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

2808855 is a wasteful number, since it uses less digits than its factorization.

2808855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 36.

The square root of 2808855 is about 1675.9639017592. The cubic root of 2808855 is about 141.0943988355.

It can be divided in two parts, 2808 and 855, that added together give a palindrome (3663).

The spelling of 2808855 in words is "two million, eight hundred eight thousand, eight hundred fifty-five".