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22007 = 59373
BaseRepresentation
bin101010111110111
31010012002
411113313
51201012
6245515
7121106
oct52767
933162
1022007
1115597
121089b
13a02b
14803d
1567c2
hex55f7

22007 has 4 divisors (see below), whose sum is σ = 22440. Its totient is φ = 21576.

The previous prime is 22003. The next prime is 22013. The reversal of 22007 is 70022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22007 - 22 = 22003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 22007.

It is not an unprimeable number, because it can be changed into a prime (22003) 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 3 ways as a sum of consecutive naturals, for example, 128 + ... + 245.

It is an arithmetic number, because the mean of its divisors is an integer number (5610).

222007 is an apocalyptic number.

22007 is a deficient number, since it is larger than the sum of its proper divisors (433).

22007 is an equidigital number, since it uses as much as digits as its factorization.

22007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432.

The product of its (nonzero) digits is 28, while the sum is 11.

The square root of 22007 is about 148.3475648604. The cubic root of 22007 is about 28.0233648513.

Adding to 22007 its reverse (70022), we get a palindrome (92029).

It can be divided in two parts, 2200 and 7, that multiplied together give a triangular number (15400 = T175).

The spelling of 22007 in words is "twenty-two thousand, seven", and thus it is an iban number.

Divisors: 1 59 373 22007