20442232 has 16 divisors (see below), whose sum is σ = 38761200. Its totient is φ = 10105920.

The previous prime is 20442203. The next prime is 20442269. The reversal of 20442232 is 23224402.

It is a super-3 number, since 3×20442232³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

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, 13644 + ... + 15067.

It is an arithmetic number, because the mean of its divisors is an integer number (2422575).

Almost surely, 2^20442232 is an apocalyptic number.

It is an amenable number.

20442232 is a deficient number, since it is larger than the sum of its proper divisors (18318968).

20442232 is a wasteful number, since it uses less digits than its factorization.

20442232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28806 (or 28802 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 20442232 is about 4521.3086601116. The cubic root of 20442232 is about 273.4278647184.

Adding to 20442232 its reverse (23224402), we get a palindrome (43666634).

It can be divided in two parts, 204 and 42232, that added together give a square (42436 = 206²).

The spelling of 20442232 in words is "twenty million, four hundred forty-two thousand, two hundred thirty-two".