2778941 has 8 divisors (see below), whose sum is σ = 3046464. Its totient is φ = 2513920.

The previous prime is 2778917. The next prime is 2778967. The reversal of 2778941 is 1498772.

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

It is a cyclic number.

It is not a de Polignac number, because 2778941 - 2⁶ = 2778877 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2778895 and 2778904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2778901) 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 in 7 ways as a sum of consecutive naturals, for example, 2336 + ... + 3318.

It is an arithmetic number, because the mean of its divisors is an integer number (380808).

2^2778941 is an apocalyptic number.

It is an amenable number.

2778941 is a deficient number, since it is larger than the sum of its proper divisors (267523).

2778941 is a wasteful number, since it uses less digits than its factorization.

2778941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251.

The product of its digits is 28224, while the sum is 38.

The square root of 2778941 is about 1667.0155968077. The cubic root of 2778941 is about 140.5917301377.

Subtracting from 2778941 its sum of digits (38), we obtain a triangular number (2778903 = T₂₃₅₇).

The spelling of 2778941 in words is "two million, seven hundred seventy-eight thousand, nine hundred forty-one".