2778367 has 8 divisors (see below), whose sum is σ = 2902592. Its totient is φ = 2656800.

The previous prime is 2778353. The next prime is 2778383. The reversal of 2778367 is 7638772.

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 2778367 - 2¹⁹ = 2254079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2778067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1642 + ... + 2872.

It is an arithmetic number, because the mean of its divisors is an integer number (362824).

2^2778367 is an apocalyptic number.

2778367 is a deficient number, since it is larger than the sum of its proper divisors (124225).

2778367 is a wasteful number, since it uses less digits than its factorization.

2778367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329.

The product of its digits is 98784, while the sum is 40.

The square root of 2778367 is about 1666.8434239604. The cubic root of 2778367 is about 140.5820495663.

The spelling of 2778367 in words is "two million, seven hundred seventy-eight thousand, three hundred sixty-seven".