2743956 has 42 divisors (see below), whose sum is σ = 7207242. Its totient is φ = 913680.

The previous prime is 2743943. The next prime is 2743967. The reversal of 2743956 is 6593472.

It can be written as a sum of positive squares in only one way, i.e., 2452356 + 291600 = 1566^2 + 540^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2743956.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 2446 + ... + 3386.

It is an arithmetic number, because the mean of its divisors is an integer number (171601).

2^2743956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2743956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3603621).

2743956 is an abundant number, since it is smaller than the sum of its proper divisors (4463286).

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

2743956 is an equidigital number, since it uses as much as digits as its factorization.

2743956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963 (or 946 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 2743956 is about 1656.4890582192. The cubic root of 2743956 is about 139.9992516967. Note that the first 3 decimals are identical.

It can be divided in two parts, 27439 and 56, that added together give a triangular number (27495 = T₂₃₄).

The spelling of 2743956 in words is "two million, seven hundred forty-three thousand, nine hundred fifty-six".