3085128 has 84 divisors (see below), whose sum is σ = 9066435. Its totient is φ = 983664.

The previous prime is 3085123. The next prime is 3085129. The reversal of 3085128 is 8215803.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 1542564 + 1542564 = 1242^2 + 1242^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=1242.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (3085123) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 134125 + ... + 134147.

Almost surely, 2^3085128 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 3085128

3085128 is an abundant number, since it is smaller than the sum of its proper divisors (5981307).

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

3085128 is an equidigital number, since it uses as much as digits as its factorization.

3085128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 3085128 is about 1756.4532444674. The cubic root of 3085128 is about 145.5764291836.

It can be divided in two parts, 30 and 85128, that added together give a palindrome (85158).

The spelling of 3085128 in words is "three million, eighty-five thousand, one hundred twenty-eight".