2773944 has 48 divisors (see below), whose sum is σ = 7651800. Its totient is φ = 907584.

The previous prime is 2773931. The next prime is 2773949. The reversal of 2773944 is 4493772.

2773944 = 87³ + 88³ + ... + 90³.

2773944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2773899 and 2773908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2773949) 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 11 ways as a sum of consecutive naturals, for example, 3922 + ... + 4574.

2^2773944 is an apocalyptic number.

2773944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2773944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3825900).

2773944 is an abundant number, since it is smaller than the sum of its proper divisors (4877856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2773944 is a wasteful number, since it uses less digits than its factorization.

2773944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724 (or 717 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 2773944 is about 1665.5161362172. The cubic root of 2773944 is about 140.5074104406.

The spelling of 2773944 in words is "two million, seven hundred seventy-three thousand, nine hundred forty-four".