3128224 has 24 divisors (see below), whose sum is σ = 6719328. Its totient is φ = 1421760.

The previous prime is 3128197. The next prime is 3128227. The reversal of 3128224 is 4228213.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 3128195 and 3128204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3128227) 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 3 ways as a sum of consecutive naturals, for example, 4092 + ... + 4795.

It is an arithmetic number, because the mean of its divisors is an integer number (279972).

Almost surely, 2^3128224 is an apocalyptic number.

It is an amenable number.

3128224 is an abundant number, since it is smaller than the sum of its proper divisors (3591104).

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

3128224 is a wasteful number, since it uses less digits than its factorization.

3128224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8908 (or 8900 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 3128224 is about 1768.6786027993. The cubic root of 3128224 is about 146.2511471408.

The spelling of 3128224 in words is "three million, one hundred twenty-eight thousand, two hundred twenty-four".