2205128 has 8 divisors (see below), whose sum is σ = 4134630. Its totient is φ = 1102560.

The previous prime is 2205113. The next prime is 2205139. The reversal of 2205128 is 8215022.

It can be written as a sum of positive squares in only one way, i.e., 1119364 + 1085764 = 1058^2 + 1042^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137813 + ... + 137828.

2^2205128 is an apocalyptic number.

It is an amenable number.

2205128 is a deficient number, since it is larger than the sum of its proper divisors (1929502).

2205128 is a wasteful number, since it uses less digits than its factorization.

2205128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275647 (or 275643 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 2205128 is about 1484.9673397082. The cubic root of 2205128 is about 130.1601182865.

The spelling of 2205128 in words is "two million, two hundred five thousand, one hundred twenty-eight".