404452872 has 64 divisors (see below), whose sum is σ = 1127073600. Its totient is φ = 134386560.

The previous prime is 404452859. The next prime is 404452889. The reversal of 404452872 is 278254404.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68668 + ... + 74324.

It is an arithmetic number, because the mean of its divisors is an integer number (17610525).

Almost surely, 2^404452872 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 404452872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (563536800).

404452872 is an abundant number, since it is smaller than the sum of its proper divisors (722620728).

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

404452872 is a wasteful number, since it uses less digits than its factorization.

404452872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6003 (or 5993 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 36.

The square root of 404452872 is about 20111.0136989660. The cubic root of 404452872 is about 739.5303033470.

The spelling of 404452872 in words is "four hundred four million, four hundred fifty-two thousand, eight hundred seventy-two".