2105626628 has 18 divisors (see below), whose sum is σ = 4286454606. Its totient is φ = 902411328.

The previous prime is 2105626591. The next prime is 2105626643. The reversal of 2105626628 is 8266265012.

It can be written as a sum of positive squares in only one way, i.e., 1358807044 + 746819584 = 36862^2 + 27328^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2105626591 and 2105626600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5371301 + ... + 5371692.

It is an arithmetic number, because the mean of its divisors is an integer number (238136367).

Almost surely, 2^2105626628 is an apocalyptic number.

2105626628 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2105626628 is an abundant number, since it is smaller than the sum of its proper divisors (2180827978).

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

2105626628 is a wasteful number, since it uses less digits than its factorization.

2105626628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10743011 (or 10743002 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 2105626628 is about 45887.1074268143. The cubic root of 2105626628 is about 1281.7218502167.

The spelling of 2105626628 in words is "two billion, one hundred five million, six hundred twenty-six thousand, six hundred twenty-eight".