400224612 has 24 divisors (see below), whose sum is σ = 949687200. Its totient is φ = 131146816.

The previous prime is 400224611. The next prime is 400224623. The reversal of 400224612 is 216422004.

It is not an unprimeable number, because it can be changed into a prime (400224611) 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 7 ways as a sum of consecutive naturals, for example, 281937 + ... + 283352.

It is an arithmetic number, because the mean of its divisors is an integer number (39570300).

Almost surely, 2^400224612 is an apocalyptic number.

It is an amenable number.

400224612 is an abundant number, since it is smaller than the sum of its proper divisors (549462588).

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

400224612 is a wasteful number, since it uses less digits than its factorization.

400224612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565355 (or 565353 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 400224612 is about 20005.6145119314. The cubic root of 400224612 is about 736.9441868692.

Adding to 400224612 its reverse (216422004), we get a palindrome (616646616).

The spelling of 400224612 in words is "four hundred million, two hundred twenty-four thousand, six hundred twelve".