2206556728 has 16 divisors (see below), whose sum is σ = 4143987000. Its totient is φ = 1101493536.

The previous prime is 2206556713. The next prime is 2206556741. The reversal of 2206556728 is 8276556022.

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, 217843 + ... + 227746.

Almost surely, 2^2206556728 is an apocalyptic number.

It is an amenable number.

2206556728 is a deficient number, since it is larger than the sum of its proper divisors (1937430272).

2206556728 is a wasteful number, since it uses less digits than its factorization.

2206556728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446214 (or 446210 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 43.

The square root of 2206556728 is about 46974.0005534977. Note that the first 3 decimals coincide. The cubic root of 2206556728 is about 1301.8822296758.

The spelling of 2206556728 in words is "two billion, two hundred six million, five hundred fifty-six thousand, seven hundred twenty-eight".