20072213 has 24 divisors (see below), whose sum is σ = 24377760. Its totient is φ = 16467360.

The previous prime is 20072209. The next prime is 20072267. The reversal of 20072213 is 31227002.

It is not a de Polignac number, because 20072213 - 2² = 20072209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20072191 and 20072200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20072203) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 153158 + ... + 153288.

It is an arithmetic number, because the mean of its divisors is an integer number (1015740).

Almost surely, 2^20072213 is an apocalyptic number.

It is an amenable number.

20072213 is a deficient number, since it is larger than the sum of its proper divisors (4305547).

20072213 is a wasteful number, since it uses less digits than its factorization.

20072213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 20072213 is about 4480.2023391807. The cubic root of 20072213 is about 271.7680629863.

Adding to 20072213 its reverse (31227002), we get a palindrome (51299215).

The spelling of 20072213 in words is "twenty million, seventy-two thousand, two hundred thirteen".