3128472500 has 60 divisors (see below), whose sum is σ = 6880547520. Its totient is φ = 1244220000.

The previous prime is 3128472449. The next prime is 3128472517. The reversal of 3128472500 is 52748213.

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, 444005 + ... + 450995.

It is an arithmetic number, because the mean of its divisors is an integer number (114675792).

Almost surely, 2^3128472500 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 3128472500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3440273760).

3128472500 is an abundant number, since it is smaller than the sum of its proper divisors (3752075020).

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

3128472500 is a wasteful number, since it uses less digits than its factorization.

3128472500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7194 (or 7177 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 3128472500 is about 55932.7497983069. The cubic root of 3128472500 is about 1462.5501967333.

The spelling of 3128472500 in words is "three billion, one hundred twenty-eight million, four hundred seventy-two thousand, five hundred".