3128205 has 16 divisors (see below), whose sum is σ = 5027904. Its totient is φ = 1660800.

The previous prime is 3128197. The next prime is 3128227. The reversal of 3128205 is 5028213.

It is not a de Polignac number, because 3128205 - 2³ = 3128197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4905 + ... + 5505.

It is an arithmetic number, because the mean of its divisors is an integer number (314244).

Almost surely, 2^3128205 is an apocalyptic number.

It is an amenable number.

3128205 is a deficient number, since it is larger than the sum of its proper divisors (1899699).

3128205 is a wasteful number, since it uses less digits than its factorization.

3128205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 3128205 is about 1768.6732315496. The cubic root of 3128205 is about 146.2508510433.

It can be divided in two parts, 3128 and 205, that added together give a palindrome (3333).

The spelling of 3128205 in words is "three million, one hundred twenty-eight thousand, two hundred five".