451812228 has 144 divisors (see below), whose sum is σ = 1294554240. Its totient is φ = 119992320.

The previous prime is 451812209. The next prime is 451812233. The reversal of 451812228 is 822218154.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2340900 + ... + 2341092.

It is an arithmetic number, because the mean of its divisors is an integer number (8989960).

Almost surely, 2^451812228 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 451812228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (647277120).

451812228 is an abundant number, since it is smaller than the sum of its proper divisors (842742012).

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

451812228 is a wasteful number, since it uses less digits than its factorization.

451812228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 265 counting only the distinct ones).

The product of its digits is 10240, while the sum is 33.

The square root of 451812228 is about 21255.8751407699. The cubic root of 451812228 is about 767.3367415450.

The spelling of 451812228 in words is "four hundred fifty-one million, eight hundred twelve thousand, two hundred twenty-eight".