622020828 has 144 divisors (see below), whose sum is σ = 1775126528. Its totient is φ = 168220800.

The previous prime is 622020823. The next prime is 622020857. The reversal of 622020828 is 828020226.

It is a junction number, because it is equal to n+sod(n) for n = 622020795 and 622020804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622020821) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 584625 + ... + 585687.

Almost surely, 2^622020828 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 622020828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (887563264).

622020828 is an abundant number, since it is smaller than the sum of its proper divisors (1153105700).

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

622020828 is a wasteful number, since it uses less digits than its factorization.

622020828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136 (or 1123 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 622020828 is about 24940.3453865419. The cubic root of 622020828 is about 853.6273257983.

The spelling of 622020828 in words is "six hundred twenty-two million, twenty thousand, eight hundred twenty-eight".