402224224 has 24 divisors (see below), whose sum is σ = 833558040. Its totient is φ = 190526976.

The previous prime is 402224203. The next prime is 402224239. The reversal of 402224224 is 422422204.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 402224195 and 402224204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330169 + ... + 331384.

It is an arithmetic number, because the mean of its divisors is an integer number (34731585).

Almost surely, 2^402224224 is an apocalyptic number.

It is an amenable number.

402224224 is an abundant number, since it is smaller than the sum of its proper divisors (431333816).

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

402224224 is a wasteful number, since it uses less digits than its factorization.

402224224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661582 (or 661574 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 402224224 is about 20055.5285146017. The cubic root of 402224224 is about 738.1694614068.

Adding to 402224224 its reverse (422422204), we get a palindrome (824646428).

The spelling of 402224224 in words is "four hundred two million, two hundred twenty-four thousand, two hundred twenty-four".