400200220 has 24 divisors (see below), whose sum is σ = 960480864. Its totient is φ = 137211456.

The previous prime is 400200197. The next prime is 400200239. The reversal of 400200220 is 22002004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 400200197 and 400200206.

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, 1429147 + ... + 1429426.

It is an arithmetic number, because the mean of its divisors is an integer number (40020036).

Almost surely, 2^400200220 is an apocalyptic number.

It is an amenable number.

400200220 is an abundant number, since it is smaller than the sum of its proper divisors (560280644).

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

400200220 is a wasteful number, since it uses less digits than its factorization.

400200220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2858589 (or 2858587 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 400200220 is about 20005.0048737810. The cubic root of 400200220 is about 736.9292153530.

Adding to 400200220 its reverse (22002004), we get a palindrome (422202224).

The spelling of 400200220 in words is "four hundred million, two hundred thousand, two hundred twenty".