3500224 has 56 divisors (see below), whose sum is σ = 8562848. Its totient is φ = 1382400.

The previous prime is 3500207. The next prime is 3500227. The reversal of 3500224 is 4220053.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 3500198 and 3500207.

It is not an unprimeable number, because it can be changed into a prime (3500227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5524 + ... + 6124.

It is an arithmetic number, because the mean of its divisors is an integer number (152908).

Almost surely, 2^3500224 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 3500224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4281424).

3500224 is an abundant number, since it is smaller than the sum of its proper divisors (5062624).

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

3500224 is a wasteful number, since it uses less digits than its factorization.

3500224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633 (or 623 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 3500224 is about 1870.8885589473. Note that the first 3 decimals coincide. The cubic root of 3500224 is about 151.8326875529.

Adding to 3500224 its reverse (4220053), we get a palindrome (7720277).

It can be divided in two parts, 35002 and 24, that multiplied together give a palindrome (840048).

The spelling of 3500224 in words is "three million, five hundred thousand, two hundred twenty-four".