404312328 has 72 divisors (see below), whose sum is σ = 1273801230. Its totient is φ = 115516800.

The previous prime is 404312327. The next prime is 404312329. The reversal of 404312328 is 823213404.

It is an interprime number because it is at equal distance from previous prime (404312327) and next prime (404312329).

It can be written as a sum of positive squares in only one way, i.e., 339959844 + 64352484 = 18438^2 + 8022^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (404312327) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 53773 + ... + 60828.

Almost surely, 2^404312328 is an apocalyptic number.

It is an amenable number.

404312328 is an abundant number, since it is smaller than the sum of its proper divisors (869488902).

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

404312328 is a wasteful number, since it uses less digits than its factorization.

404312328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114627 (or 114613 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 404312328 is about 20107.5191905914. The cubic root of 404312328 is about 739.4446332187. Note that the first 3 decimals are identical.

The spelling of 404312328 in words is "four hundred four million, three hundred twelve thousand, three hundred twenty-eight".