2794781 has 4 divisors (see below), whose sum is σ = 3048864. Its totient is φ = 2540700.

The previous prime is 2794769. The next prime is 2794787. The reversal of 2794781 is 1874972.

2794781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2794781 - 2⁶ = 2794717 is a prime.

It is a super-3 number, since 3×2794781³ = 65488433330152444623, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2794787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127025 + ... + 127046.

It is an arithmetic number, because the mean of its divisors is an integer number (762216).

2^2794781 is an apocalyptic number.

It is an amenable number.

2794781 is a deficient number, since it is larger than the sum of its proper divisors (254083).

2794781 is a wasteful number, since it uses less digits than its factorization.

2794781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254082.

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

The square root of 2794781 is about 1671.7598511748. The cubic root of 2794781 is about 140.8583490998.

The spelling of 2794781 in words is "two million, seven hundred ninety-four thousand, seven hundred eighty-one".