4221773028 has 96 divisors (see below), whose sum is σ = 12074832000. Its totient is φ = 1264919040.

The previous prime is 4221773009. The next prime is 4221773029. The reversal of 4221773028 is 8203771224.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 4221772983 and 4221773001.

It is not an unprimeable number, because it can be changed into a prime (4221773029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85768 + ... + 125696.

It is an arithmetic number, because the mean of its divisors is an integer number (125779500).

Almost surely, 2^4221773028 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 4221773028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6037416000).

4221773028 is an abundant number, since it is smaller than the sum of its proper divisors (7853058972).

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

4221773028 is a wasteful number, since it uses less digits than its factorization.

4221773028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40042 (or 40034 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 4221773028 is about 64975.1723968471. The cubic root of 4221773028 is about 1616.2118759748.

The spelling of 4221773028 in words is "four billion, two hundred twenty-one million, seven hundred seventy-three thousand, twenty-eight".