28053313 has 4 divisors (see below), whose sum is σ = 28650240. Its totient is φ = 27456388.

The previous prime is 28053293. The next prime is 28053331. The reversal of 28053313 is 31335082.

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 a de Polignac number, because none of the positive numbers 2^k-28053313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28053343) 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, 298393 + ... + 298486.

It is an arithmetic number, because the mean of its divisors is an integer number (7162560).

Almost surely, 2^28053313 is an apocalyptic number.

It is an amenable number.

28053313 is a deficient number, since it is larger than the sum of its proper divisors (596927).

28053313 is an equidigital number, since it uses as much as digits as its factorization.

28053313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596926.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 28053313 is about 5296.5378314518. The cubic root of 28053313 is about 303.8515007929.

Adding to 28053313 its reverse (31335082), we get a palindrome (59388395).

The spelling of 28053313 in words is "twenty-eight million, fifty-three thousand, three hundred thirteen".