400342304 has 24 divisors (see below), whose sum is σ = 799279488. Its totient is φ = 197350720.

The previous prime is 400342279. The next prime is 400342309. The reversal of 400342304 is 403243004.

It is a happy number.

It is a super-3 number, since 3×400342304³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (400342309) 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, 85832 + ... + 90375.

It is an arithmetic number, because the mean of its divisors is an integer number (33303312).

Almost surely, 2^400342304 is an apocalyptic number.

It is an amenable number.

400342304 is a deficient number, since it is larger than the sum of its proper divisors (398937184).

400342304 is a wasteful number, since it uses less digits than its factorization.

400342304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176288 (or 176280 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 400342304 is about 20008.5557699700. Note that the first 3 decimals coincide. The cubic root of 400342304 is about 737.0164162560.

Adding to 400342304 its reverse (403243004), we get a palindrome (803585308).

The spelling of 400342304 in words is "four hundred million, three hundred forty-two thousand, three hundred four".