2743640 has 32 divisors (see below), whose sum is σ = 6238080. Its totient is φ = 1085952.

The previous prime is 2743627. The next prime is 2743669. The reversal of 2743640 is 463472.

It is a happy number.

It is a d-powerful number, because it can be written as 2¹⁵ + 7⁴ + 4⁸ + 3¹³ + 6² + 4¹⁰ + 0 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4217 + ... + 4823.

It is an arithmetic number, because the mean of its divisors is an integer number (194940).

2^2743640 is an apocalyptic number.

2743640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2743640 is an abundant number, since it is smaller than the sum of its proper divisors (3494440).

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

2743640 is a wasteful number, since it uses less digits than its factorization.

2743640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731 (or 727 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 2743640 is about 1656.3936730138. The cubic root of 2743640 is about 139.9938772833.

The spelling of 2743640 in words is "two million, seven hundred forty-three thousand, six hundred forty".