7157028 has 12 divisors (see below), whose sum is σ = 16699760. Its totient is φ = 2385672.

The previous prime is 7157027. The next prime is 7157039. The reversal of 7157028 is 8207517.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 7156986 and 7157004.

It is not an unprimeable number, because it can be changed into a prime (7157023) 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, 298198 + ... + 298221.

Almost surely, 2^7157028 is an apocalyptic number.

It is an amenable number.

7157028 is an abundant number, since it is smaller than the sum of its proper divisors (9542732).

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

7157028 is a wasteful number, since it uses less digits than its factorization.

7157028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596426 (or 596424 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 7157028 is about 2675.2622301374. The cubic root of 7157028 is about 192.7129526184.

The spelling of 7157028 in words is "seven million, one hundred fifty-seven thousand, twenty-eight".