228506859 has 64 divisors (see below), whose sum is σ = 409108480. Its totient is φ = 123288480.

The previous prime is 228506851. The next prime is 228506869. The reversal of 228506859 is 958605822.

It is not a de Polignac number, because 228506859 - 2³ = 228506851 is a prime.

It is a super-3 number, since 3×228506859³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228506851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 251484 + ... + 252390.

It is an arithmetic number, because the mean of its divisors is an integer number (6392320).

Almost surely, 2^228506859 is an apocalyptic number.

228506859 is a deficient number, since it is larger than the sum of its proper divisors (180601621).

228506859 is a wasteful number, since it uses less digits than its factorization.

228506859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997 (or 991 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 228506859 is about 15116.4433316835. The cubic root of 228506859 is about 611.3638381826.

The spelling of 228506859 in words is "two hundred twenty-eight million, five hundred six thousand, eight hundred fifty-nine".