2078306 has 4 divisors (see below), whose sum is σ = 3117462. Its totient is φ = 1039152.

The previous prime is 2078287. The next prime is 2078309. The reversal of 2078306 is 6038702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6038702 = 2 ⋅3019351.

It can be written as a sum of positive squares in only one way, i.e., 1985281 + 93025 = 1409^2 + 305^2 .

It is not an unprimeable number, because it can be changed into a prime (2078309) by changing a digit.

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 as a sum of consecutive naturals, namely, 519575 + ... + 519578.

2^2078306 is an apocalyptic number.

2078306 is a deficient number, since it is larger than the sum of its proper divisors (1039156).

2078306 is a wasteful number, since it uses less digits than its factorization.

2078306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039155.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 2078306 is about 1441.6331017287. The cubic root of 2078306 is about 127.6154228401.

The spelling of 2078306 in words is "two million, seventy-eight thousand, three hundred six".