68748228 has 72 divisors (see below), whose sum is σ = 180180000. Its totient is φ = 22087296.

The previous prime is 68748227. The next prime is 68748233. The reversal of 68748228 is 82284786.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (68748223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 137523 + ... + 138021.

It is an arithmetic number, because the mean of its divisors is an integer number (2502500).

Almost surely, 2^68748228 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 68748228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90090000).

68748228 is an abundant number, since it is smaller than the sum of its proper divisors (111431772).

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

68748228 is a wasteful number, since it uses less digits than its factorization.

68748228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 636 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The square root of 68748228 is about 8291.4551195794. The cubic root of 68748228 is about 409.6571156645.

The spelling of 68748228 in words is "sixty-eight million, seven hundred forty-eight thousand, two hundred twenty-eight".