400030860 has 24 divisors (see below), whose sum is σ = 1120086576. Its totient is φ = 106674880.

The previous prime is 400030853. The next prime is 400030871. The reversal of 400030860 is 68030004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3333531 + ... + 3333650.

It is an arithmetic number, because the mean of its divisors is an integer number (46670274).

Almost surely, 2^400030860 is an apocalyptic number.

It is an amenable number.

400030860 is an abundant number, since it is smaller than the sum of its proper divisors (720055716).

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

400030860 is a wasteful number, since it uses less digits than its factorization.

400030860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6667193 (or 6667191 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 400030860 is about 20000.7714851203. The cubic root of 400030860 is about 736.8252474428.

Adding to 400030860 its reverse (68030004), we get a palindrome (468060864).

The spelling of 400030860 in words is "four hundred million, thirty thousand, eight hundred sixty".