3121828 has 6 divisors (see below), whose sum is σ = 5463206. Its totient is φ = 1560912.

The previous prime is 3121817. The next prime is 3121831. The reversal of 3121828 is 8281213.

3121828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2849344 + 272484 = 1688^2 + 522^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390225 + ... + 390232.

Almost surely, 2^3121828 is an apocalyptic number.

It is an amenable number.

3121828 is a deficient number, since it is larger than the sum of its proper divisors (2341378).

3121828 is a wasteful number, since it uses less digits than its factorization.

3121828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780461 (or 780459 counting only the distinct ones).

The product of its digits is 768, while the sum is 25.

The square root of 3121828 is about 1766.8695480991. The cubic root of 3121828 is about 146.1514035816.

The spelling of 3121828 in words is "three million, one hundred twenty-one thousand, eight hundred twenty-eight".