400314220 has 12 divisors (see below), whose sum is σ = 840659904. Its totient is φ = 160125680.

The previous prime is 400314217. The next prime is 400314227. The reversal of 400314220 is 22413004.

It is a junction number, because it is equal to n+sod(n) for n = 400314194 and 400314203.

It is not an unprimeable number, because it can be changed into a prime (400314227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10007836 + ... + 10007875.

It is an arithmetic number, because the mean of its divisors is an integer number (70054992).

Almost surely, 2^400314220 is an apocalyptic number.

It is an amenable number.

400314220 is an abundant number, since it is smaller than the sum of its proper divisors (440345684).

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

400314220 is a wasteful number, since it uses less digits than its factorization.

400314220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20015720 (or 20015718 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 400314220 is about 20007.8539578836. The cubic root of 400314220 is about 736.9991819603. Note that the first 3 decimals are identical.

Adding to 400314220 its reverse (22413004), we get a palindrome (422727224).

The spelling of 400314220 in words is "four hundred million, three hundred fourteen thousand, two hundred twenty".