28230849 has 20 divisors (see below), whose sum is σ = 42444864. Its totient is φ = 18698904.

The previous prime is 28230847. The next prime is 28230859. The reversal of 28230849 is 94803282.

It is not a de Polignac number, because 28230849 - 2¹ = 28230847 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28230847) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12484 + ... + 14570.

Almost surely, 2^28230849 is an apocalyptic number.

It is an amenable number.

28230849 is a deficient number, since it is larger than the sum of its proper divisors (14214015).

28230849 is a wasteful number, since it uses less digits than its factorization.

28230849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266 (or 2257 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 28230849 is about 5313.2710264017. The cubic root of 28230849 is about 304.4911303199.

It can be divided in two parts, 2823084 and 9, that multiplied together give a triangular number (25407756 = T₇₁₂₈).

The spelling of 28230849 in words is "twenty-eight million, two hundred thirty thousand, eight hundred forty-nine".