3138490 has 8 divisors (see below), whose sum is σ = 5649300. Its totient is φ = 1255392.

The previous prime is 3138469. The next prime is 3138491. The reversal of 3138490 is 948313.

It can be written as a sum of positive squares in 2 ways, for example, as 2996361 + 142129 = 1731^2 + 377^2 .

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

It is not an unprimeable number, because it can be changed into a prime (3138491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156915 + ... + 156934.

Almost surely, 2^3138490 is an apocalyptic number.

3138490 is a deficient number, since it is larger than the sum of its proper divisors (2510810).

3138490 is a wasteful number, since it uses less digits than its factorization.

3138490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313856.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 3138490 is about 1771.5783922819. The cubic root of 3138490 is about 146.4109582509.

The spelling of 3138490 in words is "three million, one hundred thirty-eight thousand, four hundred ninety".