400104224 has 24 divisors (see below), whose sum is σ = 848298780. Its totient is φ = 184663296.

The previous prime is 400104181. The next prime is 400104227. The reversal of 400104224 is 422401004.

It can be written as a sum of positive squares in 2 ways, for example, as 363283600 + 36820624 = 19060^2 + 6068^2 .

It is not an unprimeable number, because it can be changed into a prime (400104227) 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, 480479 + ... + 481310.

Almost surely, 2^400104224 is an apocalyptic number.

It is an amenable number.

400104224 is an abundant number, since it is smaller than the sum of its proper divisors (448194556).

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

400104224 is a wasteful number, since it uses less digits than its factorization.

400104224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961812 (or 961804 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 400104224 is about 20002.6054302933. The cubic root of 400104224 is about 736.8702882539.

Adding to 400104224 its reverse (422401004), we get a palindrome (822505228).

The spelling of 400104224 in words is "four hundred million, one hundred four thousand, two hundred twenty-four".