Search a number
22436 = 227179
BaseRepresentation
bin101011110100100
31010202222
411132210
51204221
6251512
7122261
oct53644
933688
1022436
1115947
1210b98
13a29b
148268
1569ab
hex57a4

22436 has 12 divisors (see below), whose sum is σ = 40320. Its totient is φ = 10920.

The previous prime is 22433. The next prime is 22441. The reversal of 22436 is 63422.

It is a plaindrome in base 9 and base 15.

It is not an unprimeable number, because it can be changed into a prime (22433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245 + ... + 323.

It is an arithmetic number, because the mean of its divisors is an integer number (3360).

222436 is an apocalyptic number.

It is an amenable number.

22436 is a deficient number, since it is larger than the sum of its proper divisors (17884).

22436 is a wasteful number, since it uses less digits than its factorization.

22436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 152 counting only the distinct ones).

The product of its digits is 288, while the sum is 17.

The square root of 22436 is about 149.7865147468. The cubic root of 22436 is about 28.2042881999.

Adding to 22436 its reverse (63422), we get a palindrome (85858).

The spelling of 22436 in words is "twenty-two thousand, four hundred thirty-six".

Divisors: 1 2 4 71 79 142 158 284 316 5609 11218 22436