2273803 has 16 divisors (see below), whose sum is σ = 2810880. Its totient is φ = 1796256.

The previous prime is 2273783. The next prime is 2273807. The reversal of 2273803 is 3083722.

It is a happy number.

It is not a de Polignac number, because 2273803 - 2⁵ = 2273771 is a prime.

It is an Ulam number.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 4426 + ... + 4912.

It is an arithmetic number, because the mean of its divisors is an integer number (175680).

2^2273803 is an apocalyptic number.

2273803 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2273803 is a deficient number, since it is larger than the sum of its proper divisors (537077).

2273803 is a wasteful number, since it uses less digits than its factorization.

2273803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 2273803 is about 1507.9134590553. The cubic root of 2273803 is about 131.4975349767.

Subtracting from 2273803 its sum of digits (25), we obtain a triangular number (2273778 = T₂₁₃₂).

The spelling of 2273803 in words is "two million, two hundred seventy-three thousand, eight hundred three".