402221200 has 30 divisors (see below), whose sum is σ = 966337394. Its totient is φ = 160888320.

The previous prime is 402221189. The next prime is 402221257. The reversal of 402221200 is 2122204.

It can be written as a sum of positive squares in 3 ways, for example, as 41525136 + 360696064 = 6444^2 + 18992^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 502377 + ... + 503176.

Almost surely, 2^402221200 is an apocalyptic number.

402221200 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402221200 is an abundant number, since it is smaller than the sum of its proper divisors (564116194).

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

402221200 is a wasteful number, since it uses less digits than its factorization.

402221200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005571 (or 1005560 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 402221200 is about 20055.4531237766. The cubic root of 402221200 is about 738.1676115016.

Adding to 402221200 its reverse (2122204), we get a palindrome (404343404).

The spelling of 402221200 in words is "four hundred two million, two hundred twenty-one thousand, two hundred".