Search a number
-
+
20222437 is a prime number
BaseRepresentation
bin100110100100…
…1000111100101
31102001101222011
41031021013211
520134104222
62001234221
7333613354
oct115110745
942041864
1020222437
1110462464
126932971
134260751
14298599b
151b96c77
hex13491e5

20222437 has 2 divisors, whose sum is σ = 20222438. Its totient is φ = 20222436.

The previous prime is 20222413. The next prime is 20222459. The reversal of 20222437 is 73422202.

It is an a-pointer prime, because the next prime (20222459) can be obtained adding 20222437 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13535041 + 6687396 = 3679^2 + 2586^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-20222437 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20222407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10111218 + 10111219.

It is an arithmetic number, because the mean of its divisors is an integer number (10111219).

Almost surely, 220222437 is an apocalyptic number.

It is an amenable number.

20222437 is a deficient number, since it is larger than the sum of its proper divisors (1).

20222437 is an equidigital number, since it uses as much as digits as its factorization.

20222437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 20222437 is about 4496.9364015961. The cubic root of 20222437 is about 272.4443653782. Note that the first 3 decimals are identical.

Adding to 20222437 its reverse (73422202), we get a palindrome (93644639).

The spelling of 20222437 in words is "twenty million, two hundred twenty-two thousand, four hundred thirty-seven".