28585253 has 4 divisors (see below), whose sum is σ = 30089760. Its totient is φ = 27080748.

The previous prime is 28585247. The next prime is 28585261. The reversal of 28585253 is 35258582.

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 28585253 - 2⁴ = 28585237 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 (28585243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752225 + ... + 752262.

It is an arithmetic number, because the mean of its divisors is an integer number (7522440).

Almost surely, 2^28585253 is an apocalyptic number.

It is an amenable number.

28585253 is a deficient number, since it is larger than the sum of its proper divisors (1504507).

28585253 is a wasteful number, since it uses less digits than its factorization.

28585253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504506.

The product of its digits is 96000, while the sum is 38.

The square root of 28585253 is about 5346.5178387433. The cubic root of 28585253 is about 305.7600073343.

The spelling of 28585253 in words is "twenty-eight million, five hundred eighty-five thousand, two hundred fifty-three".