2304405 has 24 divisors (see below), whose sum is σ = 4095000. Its totient is φ = 1198080.

The previous prime is 2304403. The next prime is 2304443. The reversal of 2304405 is 5044032.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 81 + 2304324 = 9^2 + 1518^2 .

It is not a de Polignac number, because 2304405 - 2¹ = 2304403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2304403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1221 + ... + 2469.

It is an arithmetic number, because the mean of its divisors is an integer number (170625).

2^2304405 is an apocalyptic number.

It is an amenable number.

2304405 is a deficient number, since it is larger than the sum of its proper divisors (1790595).

2304405 is a wasteful number, since it uses less digits than its factorization.

2304405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301 (or 1298 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 2304405 is about 1518.0266796074. The cubic root of 2304405 is about 132.0848283944.

Adding to 2304405 its reverse (5044032), we get a palindrome (7348437).

The spelling of 2304405 in words is "two million, three hundred four thousand, four hundred five".