74646228 has 12 divisors (see below), whose sum is σ = 174174560. Its totient is φ = 24882072.

The previous prime is 74646217. The next prime is 74646251. The reversal of 74646228 is 82264647.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3110248 + ... + 3110271.

Almost surely, 2^74646228 is an apocalyptic number.

It is an amenable number.

74646228 is an abundant number, since it is smaller than the sum of its proper divisors (99528332).

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

74646228 is a wasteful number, since it uses less digits than its factorization.

74646228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6220526 (or 6220524 counting only the distinct ones).

The product of its digits is 129024, while the sum is 39.

The square root of 74646228 is about 8639.8048589074. The cubic root of 74646228 is about 421.0522143231.

The spelling of 74646228 in words is "seventy-four million, six hundred forty-six thousand, two hundred twenty-eight".