3128561622 has 48 divisors (see below), whose sum is σ = 7145698560. Its totient is φ = 986529456.

The previous prime is 3128561573. The next prime is 3128561659. The reversal of 3128561622 is 2261658213.

3128561622 is a `hidden beast` number, since 3 + 1 + 28 + 5 + 6 + 1 + 622 = 666.

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 23 ways as a sum of consecutive naturals, for example, 242343 + ... + 254925.

It is an arithmetic number, because the mean of its divisors is an integer number (148868720).

Almost surely, 2^3128561622 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3128561622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3572849280).

3128561622 is an abundant number, since it is smaller than the sum of its proper divisors (4017136938).

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

3128561622 is a wasteful number, since it uses less digits than its factorization.

3128561622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13337 (or 13334 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 3128561622 is about 55933.5464815168. The cubic root of 3128561622 is about 1462.5640846782.

The spelling of 3128561622 in words is "three billion, one hundred twenty-eight million, five hundred sixty-one thousand, six hundred twenty-two".