28224033420 has 192 divisors, whose sum is σ = 91430954496. Its totient is φ = 6429265920.

The previous prime is 28224033413. The next prime is 28224033443. The reversal of 28224033420 is 2433042282.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 8491879 + ... + 8495201.

It is an arithmetic number, because the mean of its divisors is an integer number (476202888).

Almost surely, 2^28224033420 is an apocalyptic number.

28224033420 is a gapful number since it is divisible by the number (20) 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 28224033420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45715477248).

28224033420 is an abundant number, since it is smaller than the sum of its proper divisors (63206921076).

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

28224033420 is a wasteful number, since it uses less digits than its factorization.

28224033420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4120 (or 4118 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

The spelling of 28224033420 in words is "twenty-eight billion, two hundred twenty-four million, thirty-three thousand, four hundred twenty".