20252242 has 8 divisors (see below), whose sum is σ = 30691836. Its totient is φ = 10021632.

The previous prime is 20252231. The next prime is 20252273. The reversal of 20252242 is 24225202.

It can be written as a sum of positive squares in 2 ways, for example, as 17969121 + 2283121 = 4239^2 + 1511^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52003 + ... + 52390.

Almost surely, 2^20252242 is an apocalyptic number.

20252242 is a deficient number, since it is larger than the sum of its proper divisors (10439594).

20252242 is a wasteful number, since it uses less digits than its factorization.

20252242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104492.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 20252242 is about 4500.2491042163. The cubic root of 20252242 is about 272.5781477743.

Adding to 20252242 its reverse (24225202), we get a palindrome (44477444).

The spelling of 20252242 in words is "twenty million, two hundred fifty-two thousand, two hundred forty-two".