28230253 has 8 divisors (see below), whose sum is σ = 29266200. Its totient is φ = 27198528.

The previous prime is 28230247. The next prime is 28230259. The reversal of 28230253 is 35203282.

It is an interprime number because it is at equal distance from previous prime (28230247) and next prime (28230259).

It can be written as a sum of positive squares in 4 ways, for example, as 7409284 + 20820969 = 2722^2 + 4563^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 28230253 - 2²¹ = 26133101 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 (28230259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19875 + ... + 21247.

It is an arithmetic number, because the mean of its divisors is an integer number (3658275).

Almost surely, 2^28230253 is an apocalyptic number.

It is an amenable number.

28230253 is a deficient number, since it is larger than the sum of its proper divisors (1035947).

28230253 is a wasteful number, since it uses less digits than its factorization.

28230253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 28230253 is about 5313.2149401281. The cubic root of 28230253 is about 304.4889875341.

The spelling of 28230253 in words is "twenty-eight million, two hundred thirty thousand, two hundred fifty-three".