228861705 has 16 divisors (see below), whose sum is σ = 366379200. Its totient is φ = 121992768.

The previous prime is 228861679. The next prime is 228861719. The reversal of 228861705 is 507168822.

It is not a de Polignac number, because 228861705 - 2⁵ = 228861673 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37659 + ... + 43311.

It is an arithmetic number, because the mean of its divisors is an integer number (22898700).

Almost surely, 2^228861705 is an apocalyptic number.

It is an amenable number.

228861705 is a deficient number, since it is larger than the sum of its proper divisors (137517495).

228861705 is a wasteful number, since it uses less digits than its factorization.

228861705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8360.

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 228861705 is about 15128.1758649217. The cubic root of 228861705 is about 611.6801347636.

The spelling of 228861705 in words is "two hundred twenty-eight million, eight hundred sixty-one thousand, seven hundred five".