2205928 has 8 divisors (see below), whose sum is σ = 4136130. Its totient is φ = 1102960.

The previous prime is 2205911. The next prime is 2205947. The reversal of 2205928 is 8295022.

It can be written as a sum of positive squares in only one way, i.e., 2196324 + 9604 = 1482^2 + 98^2 .

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

It is a super-2 number, since 2×2205928² = 9732236682368, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2205896 and 2205905.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137863 + ... + 137878.

2^2205928 is an apocalyptic number.

It is an amenable number.

2205928 is a deficient number, since it is larger than the sum of its proper divisors (1930202).

2205928 is a wasteful number, since it uses less digits than its factorization.

2205928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275747 (or 275743 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2205928 is about 1485.2366814754. The cubic root of 2205928 is about 130.1758566783.

The spelling of 2205928 in words is "two million, two hundred five thousand, nine hundred twenty-eight".