404024 has 8 divisors (see below), whose sum is σ = 757560. Its totient is φ = 202008.

The previous prime is 404021. The next prime is 404029. The reversal of 404024 is 420404.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25244 + ... + 25259.

It is an arithmetic number, because the mean of its divisors is an integer number (94695).

2⁴⁰⁴⁰²⁴ is an apocalyptic number.

It is an amenable number.

404024 is a deficient number, since it is larger than the sum of its proper divisors (353536).

404024 is a wasteful number, since it uses less digits than its factorization.

404024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50509 (or 50505 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 404024 is about 635.6288225057. The cubic root of 404024 is about 73.9268817578.

Adding to 404024 its reverse (420404), we get a palindrome (824428).

The spelling of 404024 in words is "four hundred four thousand, twenty-four", and thus it is an iban number.