2403345 has 32 divisors (see below), whose sum is σ = 4497408. Its totient is φ = 1073088.

The previous prime is 2403343. The next prime is 2403347. The reversal of 2403345 is 5433042.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2403343) and next prime (2403347).

It is not a de Polignac number, because 2403345 - 2¹ = 2403343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

2403345 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2403343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4692 + ... + 5178.

It is an arithmetic number, because the mean of its divisors is an integer number (140544).

2^2403345 is an apocalyptic number.

It is an amenable number.

2403345 is a deficient number, since it is larger than the sum of its proper divisors (2094063).

2403345 is a wasteful number, since it uses less digits than its factorization.

2403345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 2403345 is about 1550.2725566816. The cubic root of 2403345 is about 133.9487626193.

Adding to 2403345 its reverse (5433042), we get a palindrome (7836387).

The spelling of 2403345 in words is "two million, four hundred three thousand, three hundred forty-five".