3505128 has 96 divisors (see below), whose sum is σ = 10342080. Its totient is φ = 985600.

The previous prime is 3505127. The next prime is 3505129. The reversal of 3505128 is 8215053.

It is an interprime number because it is at equal distance from previous prime (3505127) and next prime (3505129).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 3505098 and 3505107.

It is not an unprimeable number, because it can be changed into a prime (3505123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49333 + ... + 49403.

It is an arithmetic number, because the mean of its divisors is an integer number (107730).

Almost surely, 2^3505128 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 3505128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5171040).

3505128 is an abundant number, since it is smaller than the sum of its proper divisors (6836952).

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

3505128 is a wasteful number, since it uses less digits than its factorization.

3505128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 3505128 is about 1872.1987074026. The cubic root of 3505128 is about 151.9035630202.

The spelling of 3505128 in words is "three million, five hundred five thousand, one hundred twenty-eight".