3128424 has 64 divisors (see below), whose sum is σ = 8682240. Its totient is φ = 933120.

The previous prime is 3128401. The next prime is 3128443. The reversal of 3128424 is 4248213.

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

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3128394 and 3128403.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11409 + ... + 11679.

It is an arithmetic number, because the mean of its divisors is an integer number (135660).

Almost surely, 2^3128424 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 3128424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4341120).

3128424 is an abundant number, since it is smaller than the sum of its proper divisors (5553816).

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

3128424 is a wasteful number, since it uses less digits than its factorization.

3128424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330 (or 326 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

The square root of 3128424 is about 1768.7351412803. The cubic root of 3128424 is about 146.2542638833.

The spelling of 3128424 in words is "three million, one hundred twenty-eight thousand, four hundred twenty-four".