3138505 has 8 divisors (see below), whose sum is σ = 3830400. Its totient is φ = 2468016.

The previous prime is 3138503. The next prime is 3138521. The reversal of 3138505 is 5058313.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3138505 - 2¹ = 3138503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3138505.

It is not an unprimeable number, because it can be changed into a prime (3138503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5025 + ... + 5614.

It is an arithmetic number, because the mean of its divisors is an integer number (478800).

Almost surely, 2^3138505 is an apocalyptic number.

It is an amenable number.

3138505 is a deficient number, since it is larger than the sum of its proper divisors (691895).

3138505 is a wasteful number, since it uses less digits than its factorization.

3138505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10703.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 3138505 is about 1771.5826257897. The cubic root of 3138505 is about 146.4111915011.

The spelling of 3138505 in words is "three million, one hundred thirty-eight thousand, five hundred five".