400052200 has 24 divisors (see below), whose sum is σ = 930121830. Its totient is φ = 160020800.

The previous prime is 400052183. The next prime is 400052207. The reversal of 400052200 is 2250004.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 311804964 + 88247236 = 17658^2 + 9394^2 .

It is not an unprimeable number, because it can be changed into a prime (400052207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 999931 + ... + 1000330.

Almost surely, 2^400052200 is an apocalyptic number.

400052200 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400052200 is an abundant number, since it is smaller than the sum of its proper divisors (530069630).

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

400052200 is a wasteful number, since it uses less digits than its factorization.

400052200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000277 (or 2000268 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 400052200 is about 20001.3049574272. The cubic root of 400052200 is about 736.8383494080.

The spelling of 400052200 in words is "four hundred million, fifty-two thousand, two hundred".