7210028 has 12 divisors (see below), whose sum is σ = 14420112. Its totient is φ = 3090000.

The previous prime is 7210001. The next prime is 7210031. The reversal of 7210028 is 8200127.

7210028 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 7209991 and 7210009.

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, 128723 + ... + 128778.

It is an arithmetic number, because the mean of its divisors is an integer number (1201676).

Almost surely, 2^7210028 is an apocalyptic number.

It is an amenable number.

7210028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7210028 is a wasteful number, since it uses less digits than its factorization.

7210028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257512 (or 257510 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 7210028 is about 2685.1495302869. The cubic root of 7210028 is about 193.1874828109.

Subtracting 7210028 from its reverse (8200127), we obtain a palindrome (990099).

The spelling of 7210028 in words is "seven million, two hundred ten thousand, twenty-eight".