400304252 has 12 divisors (see below), whose sum is σ = 703540656. Its totient is φ = 199292640.

The previous prime is 400304237. The next prime is 400304327. The reversal of 400304252 is 252403004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213824 + ... + 215687.

It is an arithmetic number, because the mean of its divisors is an integer number (58628388).

Almost surely, 2^400304252 is an apocalyptic number.

It is an amenable number.

400304252 is a deficient number, since it is larger than the sum of its proper divisors (303236404).

400304252 is a wasteful number, since it uses less digits than its factorization.

400304252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429748 (or 429746 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 400304252 is about 20007.6048541548. The cubic root of 400304252 is about 736.9930647083.

Adding to 400304252 its reverse (252403004), we get a palindrome (652707256).

The spelling of 400304252 in words is "four hundred million, three hundred four thousand, two hundred fifty-two".