228081686 has 16 divisors (see below), whose sum is σ = 394460064. Its totient is φ = 96883584.

The previous prime is 228081641. The next prime is 228081701. The reversal of 228081686 is 686180822.

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, 70505 + ... + 73668.

It is an arithmetic number, because the mean of its divisors is an integer number (24653754).

Almost surely, 2^228081686 is an apocalyptic number.

228081686 is a deficient number, since it is larger than the sum of its proper divisors (166378378).

228081686 is a wasteful number, since it uses less digits than its factorization.

228081686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144295.

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 228081686 is about 15102.3735220660. The cubic root of 228081686 is about 610.9844231955.

The spelling of 228081686 in words is "two hundred twenty-eight million, eighty-one thousand, six hundred eighty-six".