402204224 has 28 divisors (see below), whose sum is σ = 845074764. Its totient is φ = 189272064.

The previous prime is 402204221. The next prime is 402204233. The reversal of 402204224 is 422402204.

It can be written as a sum of positive squares in 2 ways, for example, as 377602624 + 24601600 = 19432^2 + 4960^2 .

It is a junction number, because it is equal to n+sod(n) for n = 402204196 and 402204205.

It is not an unprimeable number, because it can be changed into a prime (402204221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183749 + ... + 185924.

Almost surely, 2^402204224 is an apocalyptic number.

It is an amenable number.

402204224 is an abundant number, since it is smaller than the sum of its proper divisors (442870540).

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

402204224 is a wasteful number, since it uses less digits than its factorization.

402204224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369702 (or 369692 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 402204224 is about 20055.0298927725. The cubic root of 402204224 is about 738.1572264119.

Adding to 402204224 its reverse (422402204), we get a palindrome (824606428).

It can be divided in two parts, 40220 and 4224, that added together give a palindrome (44444).

The spelling of 402204224 in words is "four hundred two million, two hundred four thousand, two hundred twenty-four".