404834128 has 20 divisors (see below), whose sum is σ = 784860480. Its totient is φ = 202289504.

The previous prime is 404834093. The next prime is 404834137. The reversal of 404834128 is 821438404.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 404834093 and 404834102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21513 + ... + 35671.

It is an arithmetic number, because the mean of its divisors is an integer number (39243024).

Almost surely, 2^404834128 is an apocalyptic number.

It is an amenable number.

404834128 is a deficient number, since it is larger than the sum of its proper divisors (380026352).

404834128 is a wasteful number, since it uses less digits than its factorization.

404834128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15954 (or 15948 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 404834128 is about 20120.4902524765. The cubic root of 404834128 is about 739.7626022031.

The spelling of 404834128 in words is "four hundred four million, eight hundred thirty-four thousand, one hundred twenty-eight".