451248220 has 12 divisors (see below), whose sum is σ = 947621304. Its totient is φ = 180499280.

The previous prime is 451248181. The next prime is 451248223. The reversal of 451248220 is 22842154.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451248223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11281186 + ... + 11281225.

It is an arithmetic number, because the mean of its divisors is an integer number (78968442).

Almost surely, 2^451248220 is an apocalyptic number.

It is an amenable number.

451248220 is an abundant number, since it is smaller than the sum of its proper divisors (496373084).

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

451248220 is a wasteful number, since it uses less digits than its factorization.

451248220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22562420 (or 22562418 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 451248220 is about 21242.6038893541. The cubic root of 451248220 is about 767.0173136617.

The spelling of 451248220 in words is "four hundred fifty-one million, two hundred forty-eight thousand, two hundred twenty".