20442252 has 24 divisors (see below), whose sum is σ = 50209600. Its totient is φ = 6455376.

The previous prime is 20442203. The next prime is 20442269. The reversal of 20442252 is 25224402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44602 + ... + 45057.

Almost surely, 2^20442252 is an apocalyptic number.

It is an amenable number.

20442252 is an abundant number, since it is smaller than the sum of its proper divisors (29767348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20442252 is a wasteful number, since it uses less digits than its factorization.

20442252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89685 (or 89683 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 20442252 is about 4521.3108718601. The cubic root of 20442252 is about 273.4279538893.

Adding to 20442252 its reverse (25224402), we get a palindrome (45666654).

The spelling of 20442252 in words is "twenty million, four hundred forty-two thousand, two hundred fifty-two".