7013728 has 24 divisors (see below), whose sum is σ = 13910400. Its totient is φ = 3480960.

The previous prime is 7013723. The next prime is 7013729. The reversal of 7013728 is 8273107.

It is a happy number.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7013696 and 7013705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7013723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4033 + ... + 5503.

It is an arithmetic number, because the mean of its divisors is an integer number (579600).

Almost surely, 2^7013728 is an apocalyptic number.

It is an amenable number.

7013728 is a deficient number, since it is larger than the sum of its proper divisors (6896672).

7013728 is a wasteful number, since it uses less digits than its factorization.

7013728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630 (or 1622 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 7013728 is about 2648.3443884812. The cubic root of 7013728 is about 191.4180876627.

The spelling of 7013728 in words is "seven million, thirteen thousand, seven hundred twenty-eight".