28371253 has 4 divisors (see below), whose sum is σ = 28436320. Its totient is φ = 28306188.

The previous prime is 28371241. The next prime is 28371263. The reversal of 28371253 is 35217382.

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 28371253 - 2¹³ = 28363061 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 (28371263) 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, 31875 + ... + 32752.

It is an arithmetic number, because the mean of its divisors is an integer number (7109080).

Almost surely, 2^28371253 is an apocalyptic number.

It is an amenable number.

28371253 is a deficient number, since it is larger than the sum of its proper divisors (65067).

28371253 is an equidigital number, since it uses as much as digits as its factorization.

28371253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65066.

The product of its digits is 10080, while the sum is 31.

The square root of 28371253 is about 5326.4672157069. The cubic root of 28371253 is about 304.9950836796.

The spelling of 28371253 in words is "twenty-eight million, three hundred seventy-one thousand, two hundred fifty-three".