3556224 has 160 divisors (see below), whose sum is σ = 12342000. Its totient is φ = 1016064.

The previous prime is 3556219. The next prime is 3556243. The reversal of 3556224 is 4226553.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

3556224 is a `hidden beast` number, since 35 + 5 + 622 + 4 = 666.

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

Its product of digits (7200) is a multiple of the sum of its prime divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 508029 + ... + 508035.

Almost surely, 2^3556224 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 3556224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6171000).

3556224 is an abundant number, since it is smaller than the sum of its proper divisors (8785776).

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

3556224 is an frugal number, since it uses more digits than its factorization.

3556224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47 (or 12 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 3556224 is about 1885.7953229341. The cubic root of 3556224 is about 152.6381297979.

The spelling of 3556224 in words is "three million, five hundred fifty-six thousand, two hundred twenty-four".