3020728 has 16 divisors (see below), whose sum is σ = 5910480. Its totient is φ = 1444608.

The previous prime is 3020701. The next prime is 3020761. The reversal of 3020728 is 8270203.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3020699 and 3020708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8025 + ... + 8392.

It is an arithmetic number, because the mean of its divisors is an integer number (369405).

Almost surely, 2^3020728 is an apocalyptic number.

It is an amenable number.

3020728 is a deficient number, since it is larger than the sum of its proper divisors (2889752).

3020728 is a wasteful number, since it uses less digits than its factorization.

3020728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16446 (or 16442 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 3020728 is about 1738.0241655397. The cubic root of 3020728 is about 144.5563610394.

The spelling of 3020728 in words is "three million, twenty thousand, seven hundred twenty-eight".