2230405 has 4 divisors (see below), whose sum is σ = 2676492. Its totient is φ = 1784320.

The previous prime is 2230351. The next prime is 2230409. The reversal of 2230405 is 5040322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1185921 + 1044484 = 1089^2 + 1022^2 .

It is not a de Polignac number, because 2230405 - 2⁹ = 2229893 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 (2230409) 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, 223036 + ... + 223045.

It is an arithmetic number, because the mean of its divisors is an integer number (669123).

2^2230405 is an apocalyptic number.

It is an amenable number.

2230405 is a deficient number, since it is larger than the sum of its proper divisors (446087).

2230405 is an equidigital number, since it uses as much as digits as its factorization.

2230405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446086.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 2230405 is about 1493.4540501803. The cubic root of 2230405 is about 130.6555643015.

Adding to 2230405 its reverse (5040322), we get a palindrome (7270727).

The spelling of 2230405 in words is "two million, two hundred thirty thousand, four hundred five".