228613686 has 16 divisors (see below), whose sum is σ = 522545664. Its totient is φ = 65318184.

The previous prime is 228613673. The next prime is 228613799. The reversal of 228613686 is 686316822.

228613686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 5443183 = 228613686 / (2 + 2 + 8 + 6 + 1 + 3 + 6 + 8 + 6).

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, 2721550 + ... + 2721633.

It is an arithmetic number, because the mean of its divisors is an integer number (32659104).

Almost surely, 2^228613686 is an apocalyptic number.

228613686 is an abundant number, since it is smaller than the sum of its proper divisors (293931978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228613686 is a wasteful number, since it uses less digits than its factorization.

228613686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5443195.

The product of its digits is 165888, while the sum is 42.

The square root of 228613686 is about 15119.9763888705. The cubic root of 228613686 is about 611.4590942436.

The spelling of 228613686 in words is "two hundred twenty-eight million, six hundred thirteen thousand, six hundred eighty-six".