400863268 has 18 divisors (see below), whose sum is σ = 759625314. Its totient is φ = 185013504.

The previous prime is 400863257. The next prime is 400863271. The reversal of 400863268 is 862368004.

It can be written as a sum of positive squares in 3 ways, for example, as 9535744 + 391327524 = 3088^2 + 19782^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 295821 + ... + 297172.

Almost surely, 2^400863268 is an apocalyptic number.

It is an amenable number.

400863268 is a deficient number, since it is larger than the sum of its proper divisors (358762046).

400863268 is a wasteful number, since it uses less digits than its factorization.

400863268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593023 (or 593008 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 400863268 is about 20021.5700683038. The cubic root of 400863268 is about 737.3359699551.

It can be divided in two parts, 4008 and 63268, that added together give a palindrome (67276).

The spelling of 400863268 in words is "four hundred million, eight hundred sixty-three thousand, two hundred sixty-eight".