3340728 has 24 divisors (see below), whose sum is σ = 9048000. Its totient is φ = 1113552.

The previous prime is 3340723. The next prime is 3340747. The reversal of 3340728 is 8270433.

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

It is a super-2 number, since 2×3340728² = 22320927139968, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3340723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23128 + ... + 23271.

It is an arithmetic number, because the mean of its divisors is an integer number (377000).

Almost surely, 2^3340728 is an apocalyptic number.

It is an amenable number.

3340728 is an abundant number, since it is smaller than the sum of its proper divisors (5707272).

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

3340728 is a wasteful number, since it uses less digits than its factorization.

3340728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46411 (or 46404 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 3340728 is about 1827.7658493363. The cubic root of 3340728 is about 149.4905382841.

The spelling of 3340728 in words is "three million, three hundred forty thousand, seven hundred twenty-eight".