2272823 has 4 divisors (see below), whose sum is σ = 2597520. Its totient is φ = 1948128.

The previous prime is 2272819. The next prime is 2272843. The reversal of 2272823 is 3282722.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3282722 = 2 ⋅1641361.

It is not a de Polignac number, because 2272823 - 2² = 2272819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2272792 and 2272801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2272843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162338 + ... + 162351.

It is an arithmetic number, because the mean of its divisors is an integer number (649380).

2^2272823 is an apocalyptic number.

2272823 is a deficient number, since it is larger than the sum of its proper divisors (324697).

2272823 is an equidigital number, since it uses as much as digits as its factorization.

2272823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324696.

The product of its digits is 2688, while the sum is 26.

The square root of 2272823 is about 1507.5884716991. The cubic root of 2272823 is about 131.4786406247.

The spelling of 2272823 in words is "two million, two hundred seventy-two thousand, eight hundred twenty-three".