3118728 has 32 divisors (see below), whose sum is σ = 7848000. Its totient is φ = 1032768.

The previous prime is 3118727. The next prime is 3118733. The reversal of 3118728 is 8278113.

It is a happy number.

3118728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 3118695 and 3118704.

It is not an unprimeable number, because it can be changed into a prime (3118721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4450 + ... + 5102.

It is an arithmetic number, because the mean of its divisors is an integer number (245250).

Almost surely, 2^3118728 is an apocalyptic number.

It is an amenable number.

3118728 is an abundant number, since it is smaller than the sum of its proper divisors (4729272).

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

3118728 is a wasteful number, since it uses less digits than its factorization.

3118728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861 (or 857 counting only the distinct ones).

The product of its digits is 2688, while the sum is 30.

The square root of 3118728 is about 1765.9920724624. The cubic root of 3118728 is about 146.1030110585.

The spelling of 3118728 in words is "three million, one hundred eighteen thousand, seven hundred twenty-eight".