3128145804 has 144 divisors (see below), whose sum is σ = 9431106048. Its totient is φ = 888081408.

The previous prime is 3128145791. The next prime is 3128145827. The reversal of 3128145804 is 4085418213.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1134892 + ... + 1137644.

It is an arithmetic number, because the mean of its divisors is an integer number (65493792).

Almost surely, 2^3128145804 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 3128145804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4715553024).

3128145804 is an abundant number, since it is smaller than the sum of its proper divisors (6302960244).

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

3128145804 is a wasteful number, since it uses less digits than its factorization.

3128145804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2946 (or 2932 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 3128145804 is about 55929.8292863477. The cubic root of 3128145804 is about 1462.4992852068.

The spelling of 3128145804 in words is "three billion, one hundred twenty-eight million, one hundred forty-five thousand, eight hundred four".