20352242 has 4 divisors (see below), whose sum is σ = 30528366. Its totient is φ = 10176120.

The previous prime is 20352203. The next prime is 20352259. The reversal of 20352242 is 24225302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10686361 + 9665881 = 3269^2 + 3109^2 .

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 as a sum of consecutive naturals, namely, 5088059 + ... + 5088062.

Almost surely, 2^20352242 is an apocalyptic number.

20352242 is a deficient number, since it is larger than the sum of its proper divisors (10176124).

20352242 is a wasteful number, since it uses less digits than its factorization.

20352242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10176123.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 20352242 is about 4511.3459189027. The cubic root of 20352242 is about 273.0260500128.

Adding to 20352242 its reverse (24225302), we get a palindrome (44577544).

The spelling of 20352242 in words is "twenty million, three hundred fifty-two thousand, two hundred forty-two".