228929568 has 144 divisors (see below), whose sum is σ = 716706144. Its totient is φ = 63759360.

The previous prime is 228929543. The next prime is 228929587. The reversal of 228929568 is 865929822.

It is a self number, because there is not a number n which added to its sum of digits gives 228929568.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 192271 + ... + 193457.

It is an arithmetic number, because the mean of its divisors is an integer number (4977126).

Almost surely, 2^228929568 is an apocalyptic number.

228929568 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 228929568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (358353072).

228929568 is an abundant number, since it is smaller than the sum of its proper divisors (487776576).

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

228929568 is a wasteful number, since it uses less digits than its factorization.

228929568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255 (or 1240 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 51.

The square root of 228929568 is about 15130.4186326750. The cubic root of 228929568 is about 611.7405880793.

The spelling of 228929568 in words is "two hundred twenty-eight million, nine hundred twenty-nine thousand, five hundred sixty-eight".