33402 has 16 divisors (see below), whose sum is σ = 70560.
Its totient is φ = 10512.
The previous prime is 33391. The next prime is 33403. The reversal of 33402 is 20433.
Adding to 33402 its reverse (20433), we get a palindrome (53835).
It can be divided in two parts, 33 and 402, that added together give a triangular number (435 = T29).
It is a super-2 number, since 2×334022 = 2231387208, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (33403) by changing a digit.
33402 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33 + ... + 260.
It is an arithmetic number, because the mean of its divisors is an integer number (4410).
233402 is an apocalyptic number.
33402 is an abundant number, since it is smaller than the sum of its proper divisors (37158).
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 (35280).
33402 is a wasteful number, since it uses less digits than its factorization.
33402 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 317.
The product of its (nonzero) digits is 72, while the sum is 12.
The square root of 33402 is about 182.7621404996.
The cubic root of 33402 is about 32.2050633088.
The spelling of 33402 in words is "thirty-three thousand, four hundred two".