404018382 has 16 divisors (see below), whose sum is σ = 816038352. Its totient is φ = 133339200.

The previous prime is 404018333. The next prime is 404018389. The reversal of 404018382 is 283810404.

404018382 is a modest number, since divided by 18382 gives 404 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404018389) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 332743 + ... + 333954.

It is an arithmetic number, because the mean of its divisors is an integer number (51002397).

Almost surely, 2^404018382 is an apocalyptic number.

404018382 is an abundant number, since it is smaller than the sum of its proper divisors (412019970).

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

404018382 is a wasteful number, since it uses less digits than its factorization.

404018382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666803.

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 404018382 is about 20100.2085063812. The cubic root of 404018382 is about 739.2653910230.

Adding to 404018382 its reverse (283810404), we get a palindrome (687828786).

It can be divided in two parts, 4040 and 18382, that added together give a palindrome (22422).

The spelling of 404018382 in words is "four hundred four million, eighteen thousand, three hundred eighty-two".