67650228 has 72 divisors (see below), whose sum is σ = 179786880. Its totient is φ = 22239360.

The previous prime is 67650221. The next prime is 67650239. The reversal of 67650228 is 82205676.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 67650192 and 67650201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67650221) 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, 76348 + ... + 77228.

It is an arithmetic number, because the mean of its divisors is an integer number (2497040).

Almost surely, 2^67650228 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 67650228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89893440).

67650228 is an abundant number, since it is smaller than the sum of its proper divisors (112136652).

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

67650228 is a wasteful number, since it uses less digits than its factorization.

67650228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979 (or 965 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 67650228 is about 8224.9758662260. The cubic root of 67650228 is about 407.4644790697.

The spelling of 67650228 in words is "sixty-seven million, six hundred fifty thousand, two hundred twenty-eight".