7028865 has 24 divisors (see below), whose sum is σ = 12303720. Its totient is φ = 3711744.

The previous prime is 7028851. The next prime is 7028873. The reversal of 7028865 is 5688207.

It can be written as a sum of positive squares in 4 ways, for example, as 2259009 + 4769856 = 1503^2 + 2184^2 .

It is not a de Polignac number, because 7028865 - 2⁴ = 7028849 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4189 + ... + 5621.

It is an arithmetic number, because the mean of its divisors is an integer number (512655).

Almost surely, 2^7028865 is an apocalyptic number.

It is an amenable number.

7028865 is a deficient number, since it is larger than the sum of its proper divisors (5274855).

7028865 is a wasteful number, since it uses less digits than its factorization.

7028865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553 (or 1550 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 7028865 is about 2651.2006713940. The cubic root of 7028865 is about 191.5556946355. Note that the first 3 decimals are identical.

The spelling of 7028865 in words is "seven million, twenty-eight thousand, eight hundred sixty-five".