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22612 = 225653
BaseRepresentation
bin101100001010100
31011000111
411201110
51210422
6252404
7122632
oct54124
934014
1022612
1115a97
1211104
13a3a5
148352
156a77
hex5854

22612 has 6 divisors (see below), whose sum is σ = 39578. Its totient is φ = 11304.

The previous prime is 22573. The next prime is 22613. The reversal of 22612 is 21622.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21316 + 1296 = 146^2 + 36^2 .

It is a super-2 number, since 2×226122 = 1022605088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22592 and 22601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22613) by changing a digit.

22612 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2823 + ... + 2830.

222612 is an apocalyptic number.

It is an amenable number.

22612 is a deficient number, since it is larger than the sum of its proper divisors (16966).

22612 is a wasteful number, since it uses less digits than its factorization.

22612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5657 (or 5655 counting only the distinct ones).

The product of its digits is 48, while the sum is 13.

The square root of 22612 is about 150.3728698935. The cubic root of 22612 is about 28.2778460388.

Subtracting from 22612 its reverse (21622), we obtain a triangular number (990 = T44).

The spelling of 22612 in words is "twenty-two thousand, six hundred twelve".

Divisors: 1 2 4 5653 11306 22612