It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
2220402 is an admirable number.
It is an Ulam number.
22220402 is an apocalyptic number.
2220402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2220402 is a wasteful number, since it uses less digits than its factorization.
2220402 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 370072.
The square root of 2220402 is about 1490.1013388357. The cubic root of 2220402 is about 130.4599486611.
Adding to 2220402 its reverse (2040222), we get a palindrome (4260624).
The spelling of 2220402 in words is "two million, two hundred twenty thousand, four hundred two".