228686355 has 32 divisors (see below), whose sum is σ = 424235520. Its totient is φ = 116661600.

The previous prime is 228686347. The next prime is 228686387. The reversal of 228686355 is 553686822.

228686355 is a `hidden beast` number, since 2 + 2 + 8 + 6 + 8 + 635 + 5 = 666.

228686355 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 228686355 - 2³ = 228686347 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 228686355.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33721 + ... + 39930.

It is an arithmetic number, because the mean of its divisors is an integer number (13257360).

Almost surely, 2^228686355 is an apocalyptic number.

228686355 is a deficient number, since it is larger than the sum of its proper divisors (195549165).

228686355 is a wasteful number, since it uses less digits than its factorization.

228686355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73688 (or 73682 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 228686355 is about 15122.3792770847. The cubic root of 228686355 is about 611.5238751621.

The spelling of 228686355 in words is "two hundred twenty-eight million, six hundred eighty-six thousand, three hundred fifty-five".