3109552128 has 120 divisors (see below), whose sum is σ = 8996773500. Its totient is φ = 1034944512.

The previous prime is 3109552111. The next prime is 3109552129. The reversal of 3109552128 is 8212559013.

3109552128 is a `hidden beast` number, since 3 + 109 + 5 + 521 + 28 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 3109552092 and 3109552101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3109552129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4718263 + ... + 4718921.

Almost surely, 2^3109552128 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 3109552128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4498386750).

3109552128 is an abundant number, since it is smaller than the sum of its proper divisors (5887221372).

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

3109552128 is an frugal number, since it uses more digits than its factorization.

3109552128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703 (or 664 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 3109552128 is about 55763.3582919824. The cubic root of 3109552128 is about 1459.5958298270.

The spelling of 3109552128 in words is "three billion, one hundred nine million, five hundred fifty-two thousand, one hundred twenty-eight".