20352224 has 24 divisors (see below), whose sum is σ = 40333608. Its totient is φ = 10108800.

The previous prime is 20352203. The next prime is 20352259. The reversal of 20352224 is 42225302.

It is a junction number, because it is equal to n+sod(n) for n = 20352196 and 20352205.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 2999 + ... + 7049.

It is an arithmetic number, because the mean of its divisors is an integer number (1680567).

Almost surely, 2^20352224 is an apocalyptic number.

It is an amenable number.

20352224 is a deficient number, since it is larger than the sum of its proper divisors (19981384).

20352224 is a wasteful number, since it uses less digits than its factorization.

20352224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4218 (or 4210 counting only the distinct ones).

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

The square root of 20352224 is about 4511.3439239322. The cubic root of 20352224 is about 273.0259695225.

Adding to 20352224 its reverse (42225302), we get a palindrome (62577526).

The spelling of 20352224 in words is "twenty million, three hundred fifty-two thousand, two hundred twenty-four".