2273808 has 40 divisors (see below), whose sum is σ = 5936128. Its totient is φ = 749952.

The previous prime is 2273807. The next prime is 2273827. The reversal of 2273808 is 8083722.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2273807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5910 + ... + 6282.

2^2273808 is an apocalyptic number.

It is an amenable number.

2273808 is an abundant number, since it is smaller than the sum of its proper divisors (3662320).

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

2273808 is a wasteful number, since it uses less digits than its factorization.

2273808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511 (or 505 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 2273808 is about 1507.9151169744. The cubic root of 2273808 is about 131.4976313625.

Subtracting from 2273808 its sum of digits (30), we obtain a triangular number (2273778 = T₂₁₃₂).

It can be divided in two parts, 2273 and 808, that added together give a triangular number (3081 = T₇₈).

The spelling of 2273808 in words is "two million, two hundred seventy-three thousand, eight hundred eight".