2290923 has 10 divisors (see below), whose sum is σ = 3422364. Its totient is φ = 1527228.

The previous prime is 2290907. The next prime is 2290927. The reversal of 2290923 is 3290922.

It is not a de Polignac number, because 2290923 - 2⁴ = 2290907 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2290927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 14061 + ... + 14222.

2^2290923 is an apocalyptic number.

2290923 is a deficient number, since it is larger than the sum of its proper divisors (1131441).

2290923 is an equidigital number, since it uses as much as digits as its factorization.

2290923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28295 (or 28286 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 2290923 is about 1513.5795321026. The cubic root of 2290923 is about 131.8267354807.

Subtracting 2290923 from its reverse (3290922), we obtain a palindrome (999999).

The spelling of 2290923 in words is "two million, two hundred ninety thousand, nine hundred twenty-three".