202222404 has 36 divisors (see below), whose sum is σ = 512653596. Its totient is φ = 67212288.

The previous prime is 202222387. The next prime is 202222409. The reversal of 202222404 is 404222202.

It can be written as a sum of positive squares in 2 ways, for example, as 125484804 + 76737600 = 11202^2 + 8760^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (202222409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4752 + ... + 20664.

Almost surely, 2^202222404 is an apocalyptic number.

It is an amenable number.

202222404 is an abundant number, since it is smaller than the sum of its proper divisors (310431192).

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

202222404 is a wasteful number, since it uses less digits than its factorization.

202222404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16276 (or 16271 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 202222404 is about 14220.4923965382. The cubic root of 202222404 is about 586.9616897394.

Adding to 202222404 its reverse (404222202), we get a palindrome (606444606).

The spelling of 202222404 in words is "two hundred two million, two hundred twenty-two thousand, four hundred four".