622261128 has 64 divisors (see below), whose sum is σ = 1592136000. Its totient is φ = 202592000.

The previous prime is 622261121. The next prime is 622261147. The reversal of 622261128 is 821162226.

It is a super-2 number, since 2×622261128² = 774417822839664768, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 622261095 and 622261104.

It is not an unprimeable number, because it can be changed into a prime (622261121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318298 + ... + 320246.

It is an arithmetic number, because the mean of its divisors is an integer number (24877125).

Almost surely, 2^622261128 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 622261128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (796068000).

622261128 is an abundant number, since it is smaller than the sum of its proper divisors (969874872).

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

622261128 is a wasteful number, since it uses less digits than its factorization.

622261128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262 (or 2258 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 622261128 is about 24945.1624167894. The cubic root of 622261128 is about 853.7372365000.

The spelling of 622261128 in words is "six hundred twenty-two million, two hundred sixty-one thousand, one hundred twenty-eight".