20352213 has 48 divisors (see below), whose sum is σ = 36781056. Its totient is φ = 10575360.

The previous prime is 20352203. The next prime is 20352259. The reversal of 20352213 is 31225302.

It is not a de Polignac number, because 20352213 - 2⁸ = 20351957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20352203) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 32895 + ... + 33507.

It is an arithmetic number, because the mean of its divisors is an integer number (766272).

Almost surely, 2^20352213 is an apocalyptic number.

It is an amenable number.

20352213 is a deficient number, since it is larger than the sum of its proper divisors (16428843).

20352213 is a wasteful number, since it uses less digits than its factorization.

20352213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674 (or 671 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 20352213 is about 4511.3427047831. The cubic root of 20352213 is about 273.0259203340.

Adding to 20352213 its reverse (31225302), we get a palindrome (51577515).

The spelling of 20352213 in words is "twenty million, three hundred fifty-two thousand, two hundred thirteen".