4451403220 has 192 divisors, whose sum is σ = 11130255360. Its totient is φ = 1478131200.

The previous prime is 4451403157. The next prime is 4451403287. The reversal of 4451403220 is 223041544.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 15729199 + ... + 15729481.

It is an arithmetic number, because the mean of its divisors is an integer number (57970080).

Almost surely, 2^4451403220 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 4451403220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5565127680).

4451403220 is an abundant number, since it is smaller than the sum of its proper divisors (6678852140).

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

4451403220 is a wasteful number, since it uses less digits than its factorization.

4451403220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 4451403220 is about 66718.8370702008. The cubic root of 4451403220 is about 1644.9990262464. Note that the first 3 decimals are identical.

Adding to 4451403220 its reverse (223041544), we get a palindrome (4674444764).

The spelling of 4451403220 in words is "four billion, four hundred fifty-one million, four hundred three thousand, two hundred twenty".