228312630 has 192 divisors, whose sum is σ = 744202368. Its totient is φ = 47278080.

The previous prime is 228312611. The next prime is 228312647. The reversal of 228312630 is 36213822.

228312630 is a `hidden beast` number, since 2 + 28 + 3 + 1 + 2 + 630 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 228312594 and 228312603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 499362 + ... + 499818.

It is an arithmetic number, because the mean of its divisors is an integer number (3876054).

Almost surely, 2^228312630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228312630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (372101184).

228312630 is an abundant number, since it is smaller than the sum of its proper divisors (515889738).

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

228312630 is a wasteful number, since it uses less digits than its factorization.

228312630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 228312630 is about 15110.0175380441. The cubic root of 228312630 is about 611.1905709595.

The spelling of 228312630 in words is "two hundred twenty-eight million, three hundred twelve thousand, six hundred thirty".