228508285 has 8 divisors (see below), whose sum is σ = 283055616. Its totient is φ = 176909520.

The previous prime is 228508279. The next prime is 228508303. The reversal of 228508285 is 582805822.

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

It is not a de Polignac number, because 228508285 - 2³ = 228508277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 736969 + ... + 737278.

It is an arithmetic number, because the mean of its divisors is an integer number (35381952).

Almost surely, 2^228508285 is an apocalyptic number.

It is an amenable number.

228508285 is a deficient number, since it is larger than the sum of its proper divisors (54547331).

228508285 is a wasteful number, since it uses less digits than its factorization.

228508285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474283.

The product of its (nonzero) digits is 102400, while the sum is 40.

The square root of 228508285 is about 15116.4904987897. The cubic root of 228508285 is about 611.3651099213.

The spelling of 228508285 in words is "two hundred twenty-eight million, five hundred eight thousand, two hundred eighty-five".