68228216 has 32 divisors (see below), whose sum is σ = 146486880. Its totient is φ = 29184000.

The previous prime is 68228207. The next prime is 68228239. The reversal of 68228216 is 61282286.

68228216 = 3119² + 3120² + ... + 3125².

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41816 + ... + 43416.

It is an arithmetic number, because the mean of its divisors is an integer number (4577715).

Almost surely, 2^68228216 is an apocalyptic number.

It is an amenable number.

68228216 is an abundant number, since it is smaller than the sum of its proper divisors (78258664).

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

68228216 is a wasteful number, since it uses less digits than its factorization.

68228216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2375 (or 2371 counting only the distinct ones).

The product of its digits is 18432, while the sum is 35.

The square root of 68228216 is about 8260.0372880514. The cubic root of 68228216 is about 408.6216174790.

The spelling of 68228216 in words is "sixty-eight million, two hundred twenty-eight thousand, two hundred sixteen".