3078385 has 4 divisors (see below), whose sum is σ = 3694068. Its totient is φ = 2462704.

The previous prime is 3078373. The next prime is 3078391. The reversal of 3078385 is 5838703.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5838703 = 13 ⋅449131.

It can be written as a sum of positive squares in 2 ways, for example, as 2143296 + 935089 = 1464^2 + 967^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3078385 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3078385.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307834 + ... + 307843.

It is an arithmetic number, because the mean of its divisors is an integer number (923517).

Almost surely, 2^3078385 is an apocalyptic number.

It is an amenable number.

3078385 is a deficient number, since it is larger than the sum of its proper divisors (615683).

3078385 is an equidigital number, since it uses as much as digits as its factorization.

3078385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615682.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 3078385 is about 1754.5327013196. The cubic root of 3078385 is about 145.4702922701.

It can be divided in two parts, 3078 and 385, that multiplied together give a triangular number (1185030 = T₁₅₃₉).

The spelling of 3078385 in words is "three million, seventy-eight thousand, three hundred eighty-five".