7990528 has 90 divisors (see below), whose sum is σ = 20038354. Its totient is φ = 3161088.

The previous prime is 7990519. The next prime is 7990559. The reversal of 7990528 is 8250997.

It can be written as a sum of positive squares in only one way, i.e., 5531904 + 2458624 = 2352^2 + 1568^2 .

It is a congruent number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 614650 + ... + 614662.

Almost surely, 2^7990528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7990528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10019177).

7990528 is an abundant number, since it is smaller than the sum of its proper divisors (12047826).

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

7990528 is an frugal number, since it uses more digits than its factorization.

7990528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57 (or 22 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 7990528 is about 2826.7521999638. The cubic root of 7990528 is about 199.9210354938.

The spelling of 7990528 in words is "seven million, nine hundred ninety thousand, five hundred twenty-eight".