28213335 has 12 divisors (see below), whose sum is σ = 48903192. Its totient is φ = 15047088.

The previous prime is 28213327. The next prime is 28213337. The reversal of 28213335 is 53331282.

It is not a de Polignac number, because 28213335 - 2³ = 28213327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28213299 and 28213308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28213337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 313437 + ... + 313526.

It is an arithmetic number, because the mean of its divisors is an integer number (4075266).

Almost surely, 2^28213335 is an apocalyptic number.

28213335 is a deficient number, since it is larger than the sum of its proper divisors (20689857).

28213335 is a wasteful number, since it uses less digits than its factorization.

28213335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626974 (or 626971 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 28213335 is about 5311.6226334332. The cubic root of 28213335 is about 304.4281500338.

The spelling of 28213335 in words is "twenty-eight million, two hundred thirteen thousand, three hundred thirty-five".