28029253 has 4 divisors (see below), whose sum is σ = 32033440. Its totient is φ = 24025068.

The previous prime is 28029251. The next prime is 28029257. The reversal of 28029253 is 35292082.

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 28029253 - 2¹ = 28029251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28029251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2002083 + ... + 2002096.

It is an arithmetic number, because the mean of its divisors is an integer number (8008360).

Almost surely, 2^28029253 is an apocalyptic number.

It is an amenable number.

28029253 is a deficient number, since it is larger than the sum of its proper divisors (4004187).

28029253 is an equidigital number, since it uses as much as digits as its factorization.

28029253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4004186.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 28029253 is about 5294.2660492272. The cubic root of 28029253 is about 303.7646095927.

It can be divided in two parts, 28029 and 253, that added together give a palindrome (28282).

The spelling of 28029253 in words is "twenty-eight million, twenty-nine thousand, two hundred fifty-three".