3138140 has 48 divisors (see below), whose sum is σ = 6985440. Its totient is φ = 1182720.

The previous prime is 3138137. The next prime is 3138167. The reversal of 3138140 is 418313.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 35216 + ... + 35304.

It is an arithmetic number, because the mean of its divisors is an integer number (145530).

Almost surely, 2^3138140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3138140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3492720).

3138140 is an abundant number, since it is smaller than the sum of its proper divisors (3847300).

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

3138140 is a wasteful number, since it uses less digits than its factorization.

3138140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 3138140 is about 1771.4796075597. The cubic root of 3138140 is about 146.4055155337.

The spelling of 3138140 in words is "three million, one hundred thirty-eight thousand, one hundred forty".