400304250 has 48 divisors (see below), whose sum is σ = 1082428776. Its totient is φ = 106747200.

The previous prime is 400304237. The next prime is 400304327. The reversal of 400304250 is 52403004.

It is a happy number.

400304250 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 169598529 + 230705721 = 13023^2 + 15189^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86707 + ... + 91206.

Almost surely, 2^400304250 is an apocalyptic number.

400304250 is an abundant number, since it is smaller than the sum of its proper divisors (682124526).

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

400304250 is a wasteful number, since it uses less digits than its factorization.

400304250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177936 (or 177923 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 400304250 is about 20007.6048041738. The cubic root of 400304250 is about 736.9930634809.

Adding to 400304250 its reverse (52403004), we get a palindrome (452707254).

The spelling of 400304250 in words is "four hundred million, three hundred four thousand, two hundred fifty".