228961908 has 216 divisors, whose sum is σ = 717050880. Its totient is φ = 61326720.

The previous prime is 228961903. The next prime is 228961927. The reversal of 228961908 is 809169822.

228961908 is a `hidden beast` number, since 2 + 28 + 9 + 619 + 0 + 8 = 666.

228961908 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228961903) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2898213 + ... + 2898291.

It is an arithmetic number, because the mean of its divisors is an integer number (3319680).

Almost surely, 2^228961908 is an apocalyptic number.

228961908 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228961908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (358525440).

228961908 is an abundant number, since it is smaller than the sum of its proper divisors (488088972).

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

228961908 is a wasteful number, since it uses less digits than its factorization.

228961908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 228961908 is about 15131.4873029719. The cubic root of 228961908 is about 611.7693928033.

The spelling of 228961908 in words is "two hundred twenty-eight million, nine hundred sixty-one thousand, nine hundred eight".