400200680 has 32 divisors (see below), whose sum is σ = 982311840. Its totient is φ = 145527360.

The previous prime is 400200653. The next prime is 400200719. The reversal of 400200680 is 86002004.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 454334 + ... + 455213.

It is an arithmetic number, because the mean of its divisors is an integer number (30697245).

Almost surely, 2^400200680 is an apocalyptic number.

400200680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400200680 is an abundant number, since it is smaller than the sum of its proper divisors (582111160).

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

400200680 is a wasteful number, since it uses less digits than its factorization.

400200680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909569 (or 909565 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 400200680 is about 20005.0163709006. The cubic root of 400200680 is about 736.9294977011.

Adding to 400200680 its reverse (86002004), we get a palindrome (486202684).

The spelling of 400200680 in words is "four hundred million, two hundred thousand, six hundred eighty".