3100055728 has 80 divisors (see below), whose sum is σ = 7543517184. Its totient is φ = 1198932480.

The previous prime is 3100055711. The next prime is 3100055729. The reversal of 3100055728 is 8275500013.

It is a super-2 number, since 2×3100055728² = 19220691033411219968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3100055728.

It is not an unprimeable number, because it can be changed into a prime (3100055729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159601 + ... + 177967.

Almost surely, 2^3100055728 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 3100055728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3771758592).

3100055728 is an abundant number, since it is smaller than the sum of its proper divisors (4443461456).

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

3100055728 is a wasteful number, since it uses less digits than its factorization.

3100055728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18530 (or 18524 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 3100055728 is about 55678.1440782647. The cubic root of 3100055728 is about 1458.1084730843.

The spelling of 3100055728 in words is "three billion, one hundred million, fifty-five thousand, seven hundred twenty-eight".