7128208 has 20 divisors (see below), whose sum is σ = 14106240. Its totient is φ = 3487904.

The previous prime is 7128193. The next prime is 7128221. The reversal of 7128208 is 8028217.

It is a super-2 number, since 2×7128208² = 101622698582528, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3988 + ... + 5491.

It is an arithmetic number, because the mean of its divisors is an integer number (705312).

Almost surely, 2^7128208 is an apocalyptic number.

It is an amenable number.

7128208 is a deficient number, since it is larger than the sum of its proper divisors (6978032).

7128208 is a wasteful number, since it uses less digits than its factorization.

7128208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9534 (or 9528 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 7128208 is about 2669.8704088401. The cubic root of 7128208 is about 192.4539317432.

Subtracting 7128208 from its reverse (8028217), we obtain a palindrome (900009).

The spelling of 7128208 in words is "seven million, one hundred twenty-eight thousand, two hundred eight".