2678306 has 4 divisors (see below), whose sum is σ = 4017462. Its totient is φ = 1339152.

The previous prime is 2678251. The next prime is 2678311. The reversal of 2678306 is 6038762.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6038762 = 2 ⋅3019381.

It can be written as a sum of positive squares in only one way, i.e., 2175625 + 502681 = 1475^2 + 709^2 .

It is a d-powerful number, because it can be written as 2¹⁹ + 6⁷ + 7⁵ + 8³ + 3¹¹ + 0 + 6⁸ .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669575 + ... + 669578.

2^2678306 is an apocalyptic number.

2678306 is a deficient number, since it is larger than the sum of its proper divisors (1339156).

2678306 is a wasteful number, since it uses less digits than its factorization.

2678306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339155.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 2678306 is about 1636.5530849930. The cubic root of 2678306 is about 138.8737186157.

The spelling of 2678306 in words is "two million, six hundred seventy-eight thousand, three hundred six".