228408805 has 8 divisors (see below), whose sum is σ = 275931000. Its totient is φ = 181500096.

The previous prime is 228408793. The next prime is 228408839. The reversal of 228408805 is 508804822.

It can be written as a sum of positive squares in 4 ways, for example, as 11082241 + 217326564 = 3329^2 + 14742^2 .

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 228408805 - 2¹⁷ = 228277733 is a prime.

It is a congruent number.

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, 152550 + ... + 154039.

It is an arithmetic number, because the mean of its divisors is an integer number (34491375).

Almost surely, 2^228408805 is an apocalyptic number.

It is an amenable number.

228408805 is a deficient number, since it is larger than the sum of its proper divisors (47522195).

228408805 is a wasteful number, since it uses less digits than its factorization.

228408805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306743.

The product of its (nonzero) digits is 40960, while the sum is 37.

The square root of 228408805 is about 15113.1996943070. The cubic root of 228408805 is about 611.2763787418.

The spelling of 228408805 in words is "two hundred twenty-eight million, four hundred eight thousand, eight hundred five".