7872530 has 16 divisors (see below), whose sum is σ = 15004440. Its totient is φ = 2963712.

The previous prime is 7872521. The next prime is 7872541. The reversal of 7872530 is 352787.

It can be written as a sum of positive squares in 4 ways, for example, as 7711729 + 160801 = 2777^2 + 401^2 .

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 22985 + ... + 23324.

Almost surely, 2^7872530 is an apocalyptic number.

7872530 is a deficient number, since it is larger than the sum of its proper divisors (7131910).

7872530 is a wasteful number, since it uses less digits than its factorization.

7872530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46333.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 7872530 is about 2805.8029153880. The cubic root of 7872530 is about 198.9320576455.

The spelling of 7872530 in words is "seven million, eight hundred seventy-two thousand, five hundred thirty".