20632213 has 16 divisors (see below), whose sum is σ = 24184960. Its totient is φ = 17236800.

The previous prime is 20632189. The next prime is 20632243. The reversal of 20632213 is 31223602.

It is not a de Polignac number, because 20632213 - 2¹⁷ = 20501141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20632243) 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 15 ways as a sum of consecutive naturals, for example, 89983 + ... + 90211.

It is an arithmetic number, because the mean of its divisors is an integer number (1511560).

Almost surely, 2^20632213 is an apocalyptic number.

It is an amenable number.

20632213 is a deficient number, since it is larger than the sum of its proper divisors (3552747).

20632213 is a wasteful number, since it uses less digits than its factorization.

20632213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 20632213 is about 4542.2695868916. The cubic root of 20632213 is about 274.2722931155.

Adding to 20632213 its reverse (31223602), we get a palindrome (51855815).

The spelling of 20632213 in words is "twenty million, six hundred thirty-two thousand, two hundred thirteen".