400382000 has 40 divisors (see below), whose sum is σ = 968128512. Its totient is φ = 160152000.

The previous prime is 400381991. The next prime is 400382027. The reversal of 400382000 is 283004.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 400382000.

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, 98096 + ... + 102095.

Almost surely, 2^400382000 is an apocalyptic number.

400382000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400382000 is an abundant number, since it is smaller than the sum of its proper divisors (567746512).

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

400382000 is a wasteful number, since it uses less digits than its factorization.

400382000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200214 (or 200198 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 400382000 is about 20009.5477210256. The cubic root of 400382000 is about 737.0407751080.

The spelling of 400382000 in words is "four hundred million, three hundred eighty-two thousand".