7028845 has 4 divisors (see below), whose sum is σ = 8434620. Its totient is φ = 5623072.

The previous prime is 7028843. The next prime is 7028849. The reversal of 7028845 is 5488207.

7028845 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5488207 = 19 ⋅288853.

It can be written as a sum of positive squares in 2 ways, for example, as 1857769 + 5171076 = 1363^2 + 2274^2 .

It is a cyclic number.

It is not a de Polignac number, because 7028845 - 2¹ = 7028843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7028845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7028843) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 702880 + ... + 702889.

It is an arithmetic number, because the mean of its divisors is an integer number (2108655).

Almost surely, 2^7028845 is an apocalyptic number.

It is an amenable number.

7028845 is a deficient number, since it is larger than the sum of its proper divisors (1405775).

7028845 is a wasteful number, since it uses less digits than its factorization.

7028845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405774.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 7028845 is about 2651.1968995154. The cubic root of 7028845 is about 191.5555129505. Note that the first 4 decimals are identical.

The spelling of 7028845 in words is "seven million, twenty-eight thousand, eight hundred forty-five".