404345452 has 36 divisors (see below), whose sum is σ = 831164880. Its totient is φ = 171599904.

The previous prime is 404345437. The next prime is 404345453. The reversal of 404345452 is 254543404.

It is not an unprimeable number, because it can be changed into a prime (404345453) 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 11 ways as a sum of consecutive naturals, for example, 10174 + ... + 30202.

Almost surely, 2^404345452 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 404345452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (415582440).

404345452 is an abundant number, since it is smaller than the sum of its proper divisors (426819428).

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

404345452 is a wasteful number, since it uses less digits than its factorization.

404345452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20150 (or 20141 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 31.

The square root of 404345452 is about 20108.3428456947. The cubic root of 404345452 is about 739.4648261022.

Adding to 404345452 its reverse (254543404), we get a palindrome (658888856).

The spelling of 404345452 in words is "four hundred four million, three hundred forty-five thousand, four hundred fifty-two".