404530252 has 24 divisors (see below), whose sum is σ = 809948160. Its totient is φ = 173179920.

The previous prime is 404530229. The next prime is 404530261. The reversal of 404530252 is 252035404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19749 + ... + 34627.

It is an arithmetic number, because the mean of its divisors is an integer number (33747840).

Almost surely, 2^404530252 is an apocalyptic number.

It is an amenable number.

404530252 is an abundant number, since it is smaller than the sum of its proper divisors (405417908).

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

404530252 is a wasteful number, since it uses less digits than its factorization.

404530252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15861 (or 15859 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 404530252 is about 20112.9374284315. The cubic root of 404530252 is about 739.5774626988.

Adding to 404530252 its reverse (252035404), we get a palindrome (656565656).

The spelling of 404530252 in words is "four hundred four million, five hundred thirty thousand, two hundred fifty-two".