20342330 has 8 divisors (see below), whose sum is σ = 36616212. Its totient is φ = 8136928.

The previous prime is 20342317. The next prime is 20342347. The reversal of 20342330 is 3324302.

It can be written as a sum of positive squares in 2 ways, for example, as 19864849 + 477481 = 4457^2 + 691^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20342299 and 20342308.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1017107 + ... + 1017126.

Almost surely, 2^20342330 is an apocalyptic number.

20342330 is a deficient number, since it is larger than the sum of its proper divisors (16273882).

20342330 is a wasteful number, since it uses less digits than its factorization.

20342330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2034240.

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 20342330 is about 4510.2472216055. The cubic root of 20342330 is about 272.9817195379.

Adding to 20342330 its reverse (3324302), we get a palindrome (23666632).

The spelling of 20342330 in words is "twenty million, three hundred forty-two thousand, three hundred thirty".