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8812 = 222203
BaseRepresentation
bin10001001101100
3110002101
42021230
5240222
6104444
734456
oct21154
913071
108812
116691
125124
13401b
1432d6
152927
hex226c

8812 has 6 divisors (see below), whose sum is σ = 15428. Its totient is φ = 4404.

The previous prime is 8807. The next prime is 8819. The reversal of 8812 is 2188.

It is a happy number.

It is an Ulam number.

It is a plaindrome in base 7 and base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 8812.

It is not an unprimeable number, because it can be changed into a prime (8819) by changing a digit.

8812 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, 1098 + ... + 1105.

28812 is an apocalyptic number.

It is an amenable number.

8812 is a deficient number, since it is larger than the sum of its proper divisors (6616).

8812 is a wasteful number, since it uses less digits than its factorization.

8812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207 (or 2205 counting only the distinct ones).

The product of its digits is 128, while the sum is 19.

The square root of 8812 is about 93.8722536216. The cubic root of 8812 is about 20.6549824114.

It can be divided in two parts, 88 and 12, that added together give a square (100 = 102).

The spelling of 8812 in words is "eight thousand, eight hundred twelve".

Divisors: 1 2 4 2203 4406 8812