7930128 has 20 divisors (see below), whose sum is σ = 20486288. Its totient is φ = 2643360.

The previous prime is 7930123. The next prime is 7930133. The reversal of 7930128 is 8210397.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7930123) and next prime (7930133).

It is a junction number, because it is equal to n+sod(n) for n = 7930095 and 7930104.

It is not an unprimeable number, because it can be changed into a prime (7930121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82558 + ... + 82653.

Almost surely, 2^7930128 is an apocalyptic number.

It is an amenable number.

7930128 is an abundant number, since it is smaller than the sum of its proper divisors (12556160).

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

7930128 is a wasteful number, since it uses less digits than its factorization.

7930128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165222 (or 165216 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 7930128 is about 2816.0482950404. The cubic root of 7930128 is about 199.4160298874.

The spelling of 7930128 in words is "seven million, nine hundred thirty thousand, one hundred twenty-eight".