7000028 has 36 divisors (see below), whose sum is σ = 14429520. Its totient is φ = 2910336.

The previous prime is 7000009. The next prime is 7000033. The reversal of 7000028 is 8200007.

7000028 = 997² + 998² + ... + 1003².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78608 + ... + 78696.

It is an arithmetic number, because the mean of its divisors is an integer number (400820).

Almost surely, 2^7000028 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 7000028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7214760).

7000028 is an abundant number, since it is smaller than the sum of its proper divisors (7429492).

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

7000028 is a wasteful number, since it uses less digits than its factorization.

7000028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 7000028 is about 2645.7566025619. The cubic root of 7000028 is about 191.2933733344.

It can be divided in two parts, 70000 and 28, that multiplied together give a square (1960000 = 1400²).

The spelling of 7000028 in words is "seven million, twenty-eight", and thus it is an aban number and an uban number.