228918330630 has 400 divisors, whose sum is σ = 687503124000. Its totient is φ = 54647239680.

The previous prime is 228918330551. The next prime is 228918330643. The reversal of 228918330630 is 36033819822.

228918330630 is a `hidden beast` number, since 2 + 2 + 8 + 9 + 1 + 8 + 3 + 3 + 0 + 630 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 199 ways as a sum of consecutive naturals, for example, 1150343271 + ... + 1150343469.

It is an arithmetic number, because the mean of its divisors is an integer number (1718757810).

Almost surely, 2^228918330630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228918330630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (343751562000).

228918330630 is an abundant number, since it is smaller than the sum of its proper divisors (458584793370).

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

228918330630 is an equidigital number, since it uses as much as digits as its factorization.

228918330630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 228918330630 in words is "two hundred twenty-eight billion, nine hundred eighteen million, three hundred thirty thousand, six hundred thirty".