4221428400 has 450 divisors, whose sum is σ = 17630525220. Its totient is φ = 964535040.

The previous prime is 4221428399. The next prime is 4221428401. The reversal of 4221428400 is 48241224.

4221428400 is a `hidden beast` number, since 42 + 214 + 2 + 8 + 400 = 666.

It is an interprime number because it is at equal distance from previous prime (4221428399) and next prime (4221428401).

It is a tau number, because it is divible by the number of its divisors (450).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (4221428401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 1586271 + ... + 1588929.

Almost surely, 2^4221428400 is an apocalyptic number.

4221428400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4221428400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8815262610).

4221428400 is an abundant number, since it is smaller than the sum of its proper divisors (13409096820).

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

4221428400 is a wasteful number, since it uses less digits than its factorization.

4221428400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2703 (or 2676 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

The square root of 4221428400 is about 64972.5203451428. The cubic root of 4221428400 is about 1616.1678970573.

Adding to 4221428400 its reverse (48241224), we get a palindrome (4269669624).

The spelling of 4221428400 in words is "four billion, two hundred twenty-one million, four hundred twenty-eight thousand, four hundred".