28323253 has 8 divisors (see below), whose sum is σ = 32980608. Its totient is φ = 23818704.

The previous prime is 28323209. The next prime is 28323277. The reversal of 28323253 is 35232382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-28323253 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 (28323203) 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 7 ways as a sum of consecutive naturals, for example, 37801 + ... + 38542.

It is an arithmetic number, because the mean of its divisors is an integer number (4122576).

Almost surely, 2^28323253 is an apocalyptic number.

It is an amenable number.

28323253 is a deficient number, since it is larger than the sum of its proper divisors (4657355).

28323253 is an equidigital number, since it uses as much as digits as its factorization.

28323253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76403.

The product of its digits is 8640, while the sum is 28.

The square root of 28323253 is about 5321.9595075498. The cubic root of 28323253 is about 304.8229842674.

The spelling of 28323253 in words is "twenty-eight million, three hundred twenty-three thousand, two hundred fifty-three".