2101568928 has 48 divisors (see below), whose sum is σ = 5644922976. Its totient is φ = 684230400.

The previous prime is 2101568921. The next prime is 2101568977. The reversal of 2101568928 is 8298651012.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 2101568928.

It is not an unprimeable number, because it can be changed into a prime (2101568921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250423 + ... + 258678.

It is an arithmetic number, because the mean of its divisors is an integer number (117602562).

Almost surely, 2^2101568928 is an apocalyptic number.

It is an amenable number.

2101568928 is an abundant number, since it is smaller than the sum of its proper divisors (3543354048).

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

2101568928 is a wasteful number, since it uses less digits than its factorization.

2101568928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509157 (or 509149 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 2101568928 is about 45842.8721613295. The cubic root of 2101568928 is about 1280.8979961570.

The spelling of 2101568928 in words is "two billion, one hundred one million, five hundred sixty-eight thousand, nine hundred twenty-eight".