404303424 has 56 divisors (see below), whose sum is σ = 1222540608. Its totient is φ = 115514880.

The previous prime is 404303399. The next prime is 404303437. The reversal of 404303424 is 424303404.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×404303424² = 326922517316247552, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 404303394 and 404303403.

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, 149067 + ... + 151754.

Almost surely, 2^404303424 is an apocalyptic number.

It is an amenable number.

404303424 is an abundant number, since it is smaller than the sum of its proper divisors (818237184).

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

404303424 is a wasteful number, since it uses less digits than its factorization.

404303424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300843 (or 300833 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 404303424 is about 20107.2977796620. The cubic root of 404303424 is about 739.4392050197.

Adding to 404303424 its reverse (424303404), we get a palindrome (828606828).

The spelling of 404303424 in words is "four hundred four million, three hundred three thousand, four hundred twenty-four".