402226868 has 24 divisors (see below), whose sum is σ = 771006600. Its totient is φ = 182755328.

The previous prime is 402226849. The next prime is 402226873. The reversal of 402226868 is 868622204.

It can be written as a sum of positive squares in 4 ways, for example, as 100440484 + 301786384 = 10022^2 + 17372^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100013 + ... + 103956.

It is an arithmetic number, because the mean of its divisors is an integer number (32125275).

Almost surely, 2^402226868 is an apocalyptic number.

It is an amenable number.

402226868 is a deficient number, since it is larger than the sum of its proper divisors (368779732).

402226868 is a wasteful number, since it uses less digits than its factorization.

402226868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204019 (or 204017 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 402226868 is about 20055.5944314797. The cubic root of 402226868 is about 738.1710788428.

The spelling of 402226868 in words is "four hundred two million, two hundred twenty-six thousand, eight hundred sixty-eight".