28334330 has 32 divisors (see below), whose sum is σ = 52421904. Its totient is φ = 11022336.

The previous prime is 28334311. The next prime is 28334333. The reversal of 28334330 is 3343382.

It is a Cunningham number, because it is equal to 5323²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 6869641 + 21464689 = 2621^2 + 4633^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28334330.

It is not an unprimeable number, because it can be changed into a prime (28334333) 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 15 ways as a sum of consecutive naturals, for example, 102152 + ... + 102428.

Almost surely, 2^28334330 is an apocalyptic number.

28334330 is a deficient number, since it is larger than the sum of its proper divisors (24087574).

28334330 is a wasteful number, since it uses less digits than its factorization.

28334330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 28334330 is about 5323.0000939320. Note that the first 4 decimals coincide. The cubic root of 28334330 is about 304.8627170400.

The spelling of 28334330 in words is "twenty-eight million, three hundred thirty-four thousand, three hundred thirty".