20343345 has 32 divisors (see below), whose sum is σ = 35804160. Its totient is φ = 9781440.

The previous prime is 20343331. The next prime is 20343371. The reversal of 20343345 is 54334302.

It is not a de Polignac number, because 20343345 - 2⁴ = 20343329 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22492 + ... + 23378.

It is an arithmetic number, because the mean of its divisors is an integer number (1118880).

Almost surely, 2^20343345 is an apocalyptic number.

It is an amenable number.

20343345 is a deficient number, since it is larger than the sum of its proper divisors (15460815).

20343345 is a wasteful number, since it uses less digits than its factorization.

20343345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045.

The product of its (nonzero) digits is 4320, while the sum is 24.

The square root of 20343345 is about 4510.3597417501. The cubic root of 20343345 is about 272.9862596903.

Adding to 20343345 its reverse (54334302), we get a palindrome (74677647).

The spelling of 20343345 in words is "twenty million, three hundred forty-three thousand, three hundred forty-five".