7009728 has 56 divisors (see below), whose sum is σ = 20238720. Its totient is φ = 2123520.

The previous prime is 7009711. The next prime is 7009757. The reversal of 7009728 is 8279007.

7009728 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 453 + ... + 3771.

Almost surely, 2^7009728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7009728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10119360).

7009728 is an abundant number, since it is smaller than the sum of its proper divisors (13228992).

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

7009728 is a wasteful number, since it uses less digits than its factorization.

7009728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3345 (or 3335 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 7009728 is about 2647.5890919854. The cubic root of 7009728 is about 191.3816915191.

It can be divided in two parts, 70097 and 28, that added together give a triangular number (70125 = T₃₇₄).

The spelling of 7009728 in words is "seven million, nine thousand, seven hundred twenty-eight".