400068856 has 32 divisors (see below), whose sum is σ = 819590400. Its totient is φ = 181567840.

The previous prime is 400068847. The next prime is 400068863. The reversal of 400068856 is 658860004.

It is a super-2 number, since 2×400068856² = 320110179082297472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60111 + ... + 66433.

It is an arithmetic number, because the mean of its divisors is an integer number (25612200).

Almost surely, 2^400068856 is an apocalyptic number.

It is an amenable number.

400068856 is an abundant number, since it is smaller than the sum of its proper divisors (419521544).

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

400068856 is a wasteful number, since it uses less digits than its factorization.

400068856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7059 (or 7055 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 400068856 is about 20001.7213259259. The cubic root of 400068856 is about 736.8485752479.

The spelling of 400068856 in words is "four hundred million, sixty-eight thousand, eight hundred fifty-six".