28908235 has 8 divisors (see below), whose sum is σ = 34923600. Its totient is φ = 22970784.

The previous prime is 28908221. The next prime is 28908241. The reversal of 28908235 is 53280982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28908235 - 2¹¹ = 28906187 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28908194 and 28908203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18657 + ... + 20146.

It is an arithmetic number, because the mean of its divisors is an integer number (4365450).

Almost surely, 2^28908235 is an apocalyptic number.

28908235 is a deficient number, since it is larger than the sum of its proper divisors (6015365).

28908235 is a wasteful number, since it uses less digits than its factorization.

28908235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38957.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 28908235 is about 5376.6378899829. The cubic root of 28908235 is about 306.9072813618.

The spelling of 28908235 in words is "twenty-eight million, nine hundred eight thousand, two hundred thirty-five".