2743840 has 48 divisors (see below), whose sum is σ = 7076160. Its totient is φ = 997120.

The previous prime is 2743823. The next prime is 2743849. The reversal of 2743840 is 483472.

It is a junction number, because it is equal to n+sod(n) for n = 2743799 and 2743808.

It is not an unprimeable number, because it can be changed into a prime (2743849) 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, 981 + ... + 2539.

It is an arithmetic number, because the mean of its divisors is an integer number (147420).

2^2743840 is an apocalyptic number.

2743840 is a gapful number since it is divisible by the number (20) 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 2743840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3538080).

2743840 is an abundant number, since it is smaller than the sum of its proper divisors (4332320).

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

2743840 is a wasteful number, since it uses less digits than its factorization.

2743840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585 (or 1577 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 2743840 is about 1656.4540440350. The cubic root of 2743840 is about 139.9972788587.

It can be divided in two parts, 274 and 3840, that added together give a palindrome (4114).

The spelling of 2743840 in words is "two million, seven hundred forty-three thousand, eight hundred forty".