228831408 has 90 divisors (see below), whose sum is σ = 693535596. Its totient is φ = 70402176.

The previous prime is 228831389. The next prime is 228831409. The reversal of 228831408 is 804138822.

It is a happy number.

228831408 is digitally balanced in base 3, 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 (36).

It is not an unprimeable number, because it can be changed into a prime (228831409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 19635 + ... + 29037.

Almost surely, 2^228831408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228831408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346767798).

228831408 is an abundant number, since it is smaller than the sum of its proper divisors (464704188).

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

228831408 is a wasteful number, since it uses less digits than its factorization.

228831408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9443 (or 9421 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 228831408 is about 15127.1744883174. The cubic root of 228831408 is about 611.6531419109.

The spelling of 228831408 in words is "two hundred twenty-eight million, eight hundred thirty-one thousand, four hundred eight".