20224215 has 32 divisors (see below), whose sum is σ = 39225600. Its totient is φ = 9804960.

The previous prime is 20224207. The next prime is 20224229. The reversal of 20224215 is 51242202.

It is not a de Polignac number, because 20224215 - 2³ = 20224207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5325 + ... + 8294.

It is an arithmetic number, because the mean of its divisors is an integer number (1225800).

Almost surely, 2^20224215 is an apocalyptic number.

20224215 is a deficient number, since it is larger than the sum of its proper divisors (19001385).

20224215 is a wasteful number, since it uses less digits than its factorization.

20224215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13644 (or 13638 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 20224215 is about 4497.1340873939. The cubic root of 20224215 is about 272.4523497750.

Adding to 20224215 its reverse (51242202), we get a palindrome (71466417).

The spelling of 20224215 in words is "twenty million, two hundred twenty-four thousand, two hundred fifteen".