404343252 has 72 divisors (see below), whose sum is σ = 1088689056. Its totient is φ = 131126688.

The previous prime is 404343217. The next prime is 404343257. The reversal of 404343252 is 252343404.

404343252 is a `hidden beast` number, since 404 + 3 + 4 + 3 + 252 = 666.

It is a super-3 number, since 3×404343252³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404343257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30343 + ... + 41585.

Almost surely, 2^404343252 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404343252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (544344528).

404343252 is an abundant number, since it is smaller than the sum of its proper divisors (684345804).

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

404343252 is a wasteful number, since it uses less digits than its factorization.

404343252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11299 (or 11285 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 404343252 is about 20108.2881419578. The cubic root of 404343252 is about 739.4634849836.

Adding to 404343252 its reverse (252343404), we get a palindrome (656686656).

The spelling of 404343252 in words is "four hundred four million, three hundred forty-three thousand, two hundred fifty-two".