28530753 has 4 divisors (see below), whose sum is σ = 38041008. Its totient is φ = 19020500.

The previous prime is 28530721. The next prime is 28530763. The reversal of 28530753 is 35703582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28530753 - 2⁵ = 28530721 is a prime.

It is a super-3 number, since 3×28530753³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28530703) 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, 4755123 + ... + 4755128.

It is an arithmetic number, because the mean of its divisors is an integer number (9510252).

Almost surely, 2^28530753 is an apocalyptic number.

It is an amenable number.

28530753 is a deficient number, since it is larger than the sum of its proper divisors (9510255).

28530753 is an equidigital number, since it uses as much as digits as its factorization.

28530753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9510254.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 28530753 is about 5341.4186317869. The cubic root of 28530753 is about 305.5655653262.

The spelling of 28530753 in words is "twenty-eight million, five hundred thirty thousand, seven hundred fifty-three".