22002 has 16 divisors (see below), whose sum is σ = 46560. Its totient is φ = 6912.

The previous prime is 21997. The next prime is 22003. The reversal of 22002 is 20022.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (22003) by changing a digit.

22002 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 in 7 ways as a sum of consecutive naturals, for example, 18 + ... + 210.

It is an arithmetic number, because the mean of its divisors is an integer number (2910).

2²²⁰⁰² is an apocalyptic number.

22002 is an abundant number, since it is smaller than the sum of its proper divisors (24558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23280).

22002 is a wasteful number, since it uses less digits than its factorization.

22002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217.

The product of its (nonzero) digits is 8, while the sum is 6.

The square root of 22002 is about 148.3307115873. The cubic root of 22002 is about 28.0212423837.

Adding to 22002 its reverse (20022), we get a palindrome (42024).

It can be divided in two parts, 2 and 2002, that multiplied together give a palindrome (4004).

The spelling of 22002 in words is "twenty-two thousand, two", and thus it is an iban number.