2101568 has 28 divisors (see below), whose sum is σ = 4767072. Its totient is φ = 900480.

The previous prime is 2101553. The next prime is 2101607. The reversal of 2101568 is 8651012.

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1898 + ... + 2793.

2^2101568 is an apocalyptic number.

2101568 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2101568 is an abundant number, since it is smaller than the sum of its proper divisors (2665504).

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

2101568 is an equidigital number, since it uses as much as digits as its factorization.

2101568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4710 (or 4700 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 2101568 is about 1449.6785850664. The cubic root of 2101568 is about 128.0897807620.

The spelling of 2101568 in words is "two million, one hundred one thousand, five hundred sixty-eight".