20320342 has 16 divisors (see below), whose sum is σ = 35327232. Its totient is φ = 8585640.

The previous prime is 20320303. The next prime is 20320343. The reversal of 20320342 is 24302302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9228 + ... + 11215.

It is an arithmetic number, because the mean of its divisors is an integer number (2207952).

Almost surely, 2^20320342 is an apocalyptic number.

20320342 is a deficient number, since it is larger than the sum of its proper divisors (15006890).

20320342 is a wasteful number, since it uses less digits than its factorization.

20320342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20523.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 20320342 is about 4507.8090021650. The cubic root of 20320342 is about 272.8833288753.

Adding to 20320342 its reverse (24302302), we get a palindrome (44622644).

The spelling of 20320342 in words is "twenty million, three hundred twenty thousand, three hundred forty-two".