3138020 has 12 divisors (see below), whose sum is σ = 6589884. Its totient is φ = 1255200.

The previous prime is 3137999. The next prime is 3138029. The reversal of 3138020 is 208313.

It can be written as a sum of positive squares in 2 ways, for example, as 729316 + 2408704 = 854^2 + 1552^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3138020.

It is not an unprimeable number, because it can be changed into a prime (3138029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78431 + ... + 78470.

It is an arithmetic number, because the mean of its divisors is an integer number (549157).

Almost surely, 2^3138020 is an apocalyptic number.

It is an amenable number.

3138020 is an abundant number, since it is smaller than the sum of its proper divisors (3451864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3138020 is a wasteful number, since it uses less digits than its factorization.

3138020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156910 (or 156908 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3138020 is about 1771.4457372440. The cubic root of 3138020 is about 146.4036493661.

The spelling of 3138020 in words is "three million, one hundred thirty-eight thousand, twenty".