28258283 has 8 divisors (see below), whose sum is σ = 29702400. Its totient is φ = 26832168.

The previous prime is 28258277. The next prime is 28258289. The reversal of 28258283 is 38285282.

It is an interprime number because it is at equal distance from previous prime (28258277) and next prime (28258289).

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

It is not a de Polignac number, because 28258283 - 2¹⁰ = 28257259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28258289) 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, 1223 + ... + 7616.

It is an arithmetic number, because the mean of its divisors is an integer number (3712800).

Almost surely, 2^28258283 is an apocalyptic number.

28258283 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

28258283 is a deficient number, since it is larger than the sum of its proper divisors (1444117).

28258283 is a wasteful number, since it uses less digits than its factorization.

28258283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9001.

The product of its digits is 61440, while the sum is 38.

The square root of 28258283 is about 5315.8520483550. The cubic root of 28258283 is about 304.5897305575.

The spelling of 28258283 in words is "twenty-eight million, two hundred fifty-eight thousand, two hundred eighty-three".