8404224 has 72 divisors (see below), whose sum is σ = 23154432. Its totient is φ = 2703360.

The previous prime is 8404219. The next prime is 8404237. The reversal of 8404224 is 4224048.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 8404194 and 8404203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23632 + ... + 23984.

Almost surely, 2^8404224 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 8404224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11577216).

8404224 is an abundant number, since it is smaller than the sum of its proper divisors (14750208).

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

8404224 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 11 representation: 8404224 = (4820244)₁₁.

8404224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 8404224 is about 2899.0039668824. The cubic root of 8404224 is about 203.3133391311.

The spelling of 8404224 in words is "eight million, four hundred four thousand, two hundred twenty-four".