68240228 has 12 divisors (see below), whose sum is σ = 136480512. Its totient is φ = 29245800.

The previous prime is 68240177. The next prime is 68240233. The reversal of 68240228 is 82204286.

It is a happy number.

68240228 is an admirable number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 68240194 and 68240203.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1218548 + ... + 1218603.

It is an arithmetic number, because the mean of its divisors is an integer number (11373376).

Almost surely, 2^68240228 is an apocalyptic number.

It is an amenable number.

68240228 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

68240228 is a wasteful number, since it uses less digits than its factorization.

68240228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2437162 (or 2437160 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 68240228 is about 8260.7643714126. The cubic root of 68240228 is about 408.6455961940.

The spelling of 68240228 in words is "sixty-eight million, two hundred forty thousand, two hundred twenty-eight".