28449230 has 16 divisors (see below), whose sum is σ = 52400304. Its totient is φ = 11114880.

The previous prime is 28449217. The next prime is 28449233. The reversal of 28449230 is 3294482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28449233) 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, 32651 + ... + 33510.

It is an arithmetic number, because the mean of its divisors is an integer number (3275019).

Almost surely, 2^28449230 is an apocalyptic number.

28449230 is a deficient number, since it is larger than the sum of its proper divisors (23951074).

28449230 is a wasteful number, since it uses less digits than its factorization.

28449230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66211.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 28449230 is about 5333.7819602980. The cubic root of 28449230 is about 305.2742494301.

The spelling of 28449230 in words is "twenty-eight million, four hundred forty-nine thousand, two hundred thirty".