28418235 has 32 divisors (see below), whose sum is σ = 46759680. Its totient is φ = 14732928.

The previous prime is 28418233. The next prime is 28418239. The reversal of 28418235 is 53281482.

It is not a de Polignac number, because 28418235 - 2¹ = 28418233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28418196 and 28418205.

It is not an unprimeable number, because it can be changed into a prime (28418233) 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 31 ways as a sum of consecutive naturals, for example, 144157 + ... + 144353.

It is an arithmetic number, because the mean of its divisors is an integer number (1461240).

Almost surely, 2^28418235 is an apocalyptic number.

28418235 is a deficient number, since it is larger than the sum of its proper divisors (18341445).

28418235 is a wasteful number, since it uses less digits than its factorization.

28418235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427.

The product of its digits is 15360, while the sum is 33.

The square root of 28418235 is about 5330.8756316388. The cubic root of 28418235 is about 305.1633452724.

The spelling of 28418235 in words is "twenty-eight million, four hundred eighteen thousand, two hundred thirty-five".