28935530 has 32 divisors (see below), whose sum is σ = 59394384. Its totient is φ = 10054656.

The previous prime is 28935469. The next prime is 28935539. The reversal of 28935530 is 3553982.

It can be written as a sum of positive squares in 8 ways, for example, as 17799961 + 11135569 = 4219^2 + 3337^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28935539) 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, 4337 + ... + 8756.

Almost surely, 2^28935530 is an apocalyptic number.

28935530 is an abundant number, since it is smaller than the sum of its proper divisors (30458854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28935530 is a wasteful number, since it uses less digits than its factorization.

28935530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13130.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 28935530 is about 5379.1755873926. The cubic root of 28935530 is about 307.0038443781.

The spelling of 28935530 in words is "twenty-eight million, nine hundred thirty-five thousand, five hundred thirty".