2106206056 has 16 divisors (see below), whose sum is σ = 4055870340. Its totient is φ = 1024640640.

The previous prime is 2106206033. The next prime is 2106206077. The reversal of 2106206056 is 6506026012.

It can be written as a sum of positive squares in 2 ways, for example, as 2104056900 + 2149156 = 45870^2 + 1466^2 .

It is a super-2 number, since 2×2106206056² = 8872207900662150272, which contains 22 as substring.

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, 3557485 + ... + 3558076.

Almost surely, 2^2106206056 is an apocalyptic number.

It is an amenable number.

2106206056 is a deficient number, since it is larger than the sum of its proper divisors (1949664284).

2106206056 is a wasteful number, since it uses less digits than its factorization.

2106206056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7115604 (or 7115600 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 2106206056 is about 45893.4206177748. The cubic root of 2106206056 is about 1281.8394078449.

The spelling of 2106206056 in words is "two billion, one hundred six million, two hundred six thousand, fifty-six".