3078138 has 32 divisors (see below), whose sum is σ = 7128576. Its totient is φ = 867888.

The previous prime is 3078137. The next prime is 3078149. The reversal of 3078138 is 8318703.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3078137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3045 + ... + 3927.

It is an arithmetic number, because the mean of its divisors is an integer number (222768).

Almost surely, 2^3078138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3078138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3564288).

3078138 is an abundant number, since it is smaller than the sum of its proper divisors (4050438).

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

3078138 is a wasteful number, since it uses less digits than its factorization.

3078138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 3078138 is about 1754.4623107950. The cubic root of 3078138 is about 145.4664014720.

The spelling of 3078138 in words is "three million, seventy-eight thousand, one hundred thirty-eight".