20224432 has 10 divisors (see below), whose sum is σ = 39184868. Its totient is φ = 10112208.

The previous prime is 20224423. The next prime is 20224447. The reversal of 20224432 is 23442202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631998 + ... + 632029.

Almost surely, 2^20224432 is an apocalyptic number.

It is an amenable number.

20224432 is a deficient number, since it is larger than the sum of its proper divisors (18960436).

20224432 is a wasteful number, since it uses less digits than its factorization.

20224432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264035 (or 1264029 counting only the distinct ones).

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

The square root of 20224432 is about 4497.1582138057. The cubic root of 20224432 is about 272.4533242166.

Adding to 20224432 its reverse (23442202), we get a palindrome (43666634).

The spelling of 20224432 in words is "twenty million, two hundred twenty-four thousand, four hundred thirty-two".