3070728 has 24 divisors (see below), whose sum is σ = 8316750. Its totient is φ = 1023552.

The previous prime is 3070709. The next prime is 3070783. The reversal of 3070728 is 8270703.

3070728 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2490084 + 580644 = 1578^2 + 762^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 21253 + ... + 21396.

Almost surely, 2^3070728 is an apocalyptic number.

It is an amenable number.

3070728 is an abundant number, since it is smaller than the sum of its proper divisors (5246022).

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

3070728 is a wasteful number, since it uses less digits than its factorization.

3070728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42661 (or 42654 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 3070728 is about 1752.3492802521. The cubic root of 3070728 is about 145.3495806168.

The spelling of 3070728 in words is "three million, seventy thousand, seven hundred twenty-eight".