67856228 has 12 divisors (see below), whose sum is σ = 129543792. Its totient is φ = 30843720.

The previous prime is 67856221. The next prime is 67856249. The reversal of 67856228 is 82265876.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 1542187 = 67856228 / (6 + 7 + 8 + 5 + 6 + 2 + 2 + 8).

It is not an unprimeable number, because it can be changed into a prime (67856221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 771050 + ... + 771137.

It is an arithmetic number, because the mean of its divisors is an integer number (10795316).

Almost surely, 2^67856228 is an apocalyptic number.

It is an amenable number.

67856228 is a deficient number, since it is larger than the sum of its proper divisors (61687564).

67856228 is a wasteful number, since it uses less digits than its factorization.

67856228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1542202 (or 1542200 counting only the distinct ones).

The product of its digits is 322560, while the sum is 44.

The square root of 67856228 is about 8237.4891805695. The cubic root of 67856228 is about 407.8776465745.

The spelling of 67856228 in words is "sixty-seven million, eight hundred fifty-six thousand, two hundred twenty-eight".