4222623728 has 40 divisors (see below), whose sum is σ = 8549452800. Its totient is φ = 2016580544.

The previous prime is 4222623709. The next prime is 4222623731. The reversal of 4222623728 is 8273262224.

It is a super-2 number, since 2×4222623728² = 35661102296537235968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4222623691 and 4222623700.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 256613 + ... + 272571.

It is an arithmetic number, because the mean of its divisors is an integer number (213736320).

Almost surely, 2^4222623728 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 4222623728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4274726400).

4222623728 is an abundant number, since it is smaller than the sum of its proper divisors (4326829072).

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

4222623728 is a wasteful number, since it uses less digits than its factorization.

4222623728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16709 (or 16703 counting only the distinct ones).

The product of its digits is 129024, while the sum is 38.

The square root of 4222623728 is about 64981.7184137200. The cubic root of 4222623728 is about 1616.3204258735.

The spelling of 4222623728 in words is "four billion, two hundred twenty-two million, six hundred twenty-three thousand, seven hundred twenty-eight".