228686316 has 24 divisors (see below), whose sum is σ = 542350704. Its totient is φ = 74978880.

The previous prime is 228686281. The next prime is 228686317. The reversal of 228686316 is 613686822.

It is a super-2 number, since 2×228686316² = 104594862251303712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (228686317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155475 + ... + 156938.

It is an arithmetic number, because the mean of its divisors is an integer number (22597946).

Almost surely, 2^228686316 is an apocalyptic number.

It is an amenable number.

228686316 is an abundant number, since it is smaller than the sum of its proper divisors (313664388).

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

228686316 is a wasteful number, since it uses less digits than its factorization.

228686316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312481 (or 312479 counting only the distinct ones).

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

The square root of 228686316 is about 15122.3779876050. The cubic root of 228686316 is about 611.5238403992.

The spelling of 228686316 in words is "two hundred twenty-eight million, six hundred eighty-six thousand, three hundred sixteen".