2273806 has 16 divisors (see below), whose sum is σ = 3661200. Its totient is φ = 1055808.

The previous prime is 2273783. The next prime is 2273807. The reversal of 2273806 is 6083722.

It is an Ulam number.

It is a congruent number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1450 + ... + 2578.

It is an arithmetic number, because the mean of its divisors is an integer number (228825).

2^2273806 is an apocalyptic number.

2273806 is a deficient number, since it is larger than the sum of its proper divisors (1387394).

2273806 is a wasteful number, since it uses less digits than its factorization.

2273806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 2273806 is about 1507.9144538070. The cubic root of 2273806 is about 131.4975928082.

Subtracting from 2273806 its sum of digits (28), we obtain a triangular number (2273778 = T₂₁₃₂).

The spelling of 2273806 in words is "two million, two hundred seventy-three thousand, eight hundred six".