20342318 has 8 divisors (see below), whose sum is σ = 30627720. Its totient is φ = 10133080.

The previous prime is 20342317. The next prime is 20342347. The reversal of 20342318 is 81324302.

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

It is a super-2 number, since 2×20342318² = 827619803226248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20342293 and 20342302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20342317) by changing a digit.

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, 18368 + ... + 19443.

It is an arithmetic number, because the mean of its divisors is an integer number (3828465).

Almost surely, 2^20342318 is an apocalyptic number.

20342318 is a deficient number, since it is larger than the sum of its proper divisors (10285402).

20342318 is a wasteful number, since it uses less digits than its factorization.

20342318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38082.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 20342318 is about 4510.2458913013. The cubic root of 20342318 is about 272.9816658603.

The spelling of 20342318 in words is "twenty million, three hundred forty-two thousand, three hundred eighteen".